Iozone results

qcow2 data set
  • qcow_output.txt
Investigated data set
  • lvm_output.txt

mean => Arithmetic mean
standar dev. => Sample standard deviation
ci. max 90%, ci.min => confidence interval at confidence level 90% => it means that mean value of the distribution lies with 90% propability in interval ci_min-ci_max
geom. mean => Geometric mean
median => Second quartile = cuts data set in half = 50th percentile
first quartile => cuts off lowest 25% of data = 25th percentile
third quartile => cuts off highest 25% of data, or lowest 75% = 75th percentile
minimum => Lowest value of data set
maximum => Hightest value of data set
qcow2 lvm2 difference => Difference of medians of both sets in percennt. Arithmetic means are used in detail mode instead.
ttest p-value => Student's t-test p-value = probability the both data sets are equal
ttest equality => If p-value is higher than 0.1, data sets are considered being equal with 90% probability. Otherwise the data sets are considered being different.
Linear regression of all results regression line is in y = ax form, b coeficient is zero.

for details about operations performed see Iozone documentation

Write
Re-write
Read
Re-read
Random read
Random write
Backwards read
Record rewrite
Strided Read
Fwrite
Frewrite
Fread
Freread
Summary

Write

iwrite_FS
Write File size [kB] 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152
qcow2mean val. 563.48 852.79 1136.95 1379.49 1453.43 1506.48 1496.71 1484.54 1512.93 1541.49 1536.15 1304.78 258.21 151.79 132.3 122.09
standard dev. 117.59 181.71 281.6 378.89 391.91 388.35 380.63 361.34 334.89 263.0 256.98 221.37 21.58 10.28 2.97 1.27
ci. min. 90% 451.36 703.31 930.13 1125.69 1210.5 1281.36 1288.71 1297.22 1347.39 1378.46 1376.85 1167.56 244.83 145.41 130.46 121.3
ci. max 90% 675.59 1002.27 1343.77 1633.28 1696.35 1731.6 1704.72 1671.87 1678.47 1704.51 1695.44 1442.0 271.59 158.16 134.14 122.88
geom. mean 552.17 833.77 1100.11 1321.11 1394.93 1446.64 1440.11 1432.25 1468.39 1515.61 1511.32 1282.52 257.39 151.48 132.27 122.08
median 600.14 939.29 1256.07 1542.19 1620.79 1670.79 1684.15 1644.54 1637.65 1568.54 1565.29 1340.94 261.75 147.36 133.41 121.96
first quartile 534.11 779.81 1039.79 1283.76 1392.62 1491.32 1386.42 1334.69 1536.7 1530.44 1537.69 1309.7 246.59 145.01 131.38 121.36
third quartile 636.57 970.91 1323.49 1614.92 1778.9 1736.75 1769.95 1746.17 1744.82 1732.92 1709.95 1440.29 272.5 159.87 134.44 123.0
minimum 374.06 536.74 631.37 682.27 734.19 723.35 736.11 723.53 758.9 887.36 891.2 738.13 218.84 138.15 125.57 120.32
maximum 672.5 993.33 1344.66 1694.25 1808.82 1860.49 1811.64 1764.83 1759.96 1748.45 1738.27 1461.87 288.26 166.64 135.12 123.83
lvm2mean val. 586.6 881.48 1141.31 1354.29 1427.63 1508.18 1495.45 1486.61 1503.25 1546.84 1539.9 1311.43 235.41 136.19 109.72 99.19
standard dev. 124.8 199.09 300.07 362.79 388.72 411.4 370.67 366.49 335.67 270.45 267.15 198.0 12.9 2.38 1.43 1.65
ci. min. 90% 467.62 717.7 920.92 1111.28 1186.68 1269.69 1292.88 1296.61 1337.32 1379.2 1374.31 1188.7 227.41 134.71 108.84 98.17
ci. max 90% 705.58 1045.26 1361.7 1597.3 1668.58 1746.66 1698.01 1676.61 1669.18 1714.48 1705.49 1434.17 243.41 137.66 110.6 100.21
geom. mean 574.01 859.7 1099.5 1299.72 1367.78 1443.41 1440.6 1433.77 1457.86 1519.34 1513.42 1294.78 235.1 136.17 109.71 99.18
median 638.12 985.48 1244.15 1522.52 1533.67 1686.91 1659.66 1642.34 1637.53 1595.84 1583.57 1333.4 236.09 136.24 109.83 98.52
first quartile 563.99 775.71 1024.95 1288.32 1434.54 1336.51 1442.97 1315.91 1521.33 1533.45 1510.43 1295.76 228.63 135.52 109.11 98.07
third quartile 672.5 1014.49 1350.89 1564.97 1714.9 1759.71 1746.75 1755.85 1711.62 1747.29 1723.63 1446.74 243.18 137.33 110.67 100.07
minimum 378.93 555.5 611.48 685.83 688.74 727.24 733.92 737.38 747.24 874.15 886.95 817.32 217.49 132.71 106.78 97.06
maximum 679.47 1032.46 1381.88 1645.08 1834.93 1872.54 1785.8 1783.78 1762.88 1754.48 1734.93 1460.1 257.53 140.39 111.66 101.93
qcow2 lvm2 difference 6.33 % 4.92 % -0.95 % -1.28 % -5.38 % 0.97 % -1.45 % -0.13 % -0.01 % 1.74 % 1.17 % -0.56 % -9.81 % -7.54 % -17.67 % -19.22 %
ttest p-value 0.7707 0.7996 0.9781 0.8939 0.8903 0.9925 0.9938 0.989 0.9419 0.9666 0.9762 0.9472 0.0151 0.0004 0.0 0.0
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME DIFF DIFF DIFF DIFF
iwrite_BS
Write Block size [kB] 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384
qcow2mean val. 655.61 1242.93 1306.62 1462.98 1017.76 1176.56 1208.37 1163.16 1111.21 978.06 898.5 823.64 745.84
standard dev. 126.11 260.86 342.58 422.49 645.19 687.78 728.64 735.05 734.56 667.81 658.32 666.63 647.69
ci. min. 90% 577.44 1081.24 1094.28 1201.1 735.0 863.78 863.5 799.81 730.39 613.12 516.89 410.43 311.99
ci. max 90% 733.78 1404.62 1518.97 1724.86 1300.53 1489.34 1553.24 1526.51 1492.03 1343.01 1280.12 1236.85 1179.69
geom. mean 642.14 1212.14 1257.43 1388.59 727.65 820.38 820.06 771.79 727.08 648.14 581.24 508.49 458.01
median 723.35 1337.8 1331.97 1687.26 942.27 1576.27 1644.05 1565.29 1554.51 1340.94 1084.63 852.07 581.86
first quartile 631.37 1232.45 1256.07 1331.01 463.12 485.13 414.88 246.59 243.58 227.45 189.9 159.87 153.26
third quartile 734.19 1412.41 1501.39 1737.92 1680.9 1727.2 1754.18 1749.88 1733.15 1570.16 1526.55 1537.69 1364.89
minimum 374.06 672.5 636.57 600.14 121.96 123.73 120.53 123.83 122.41 121.64 120.32 121.36 123.0
maximum 758.9 1463.01 1733.25 1808.82 1752.85 1785.72 1860.49 1802.49 1751.29 1583.85 1547.94 1542.63 1545.44
lvm2mean val. 651.81 1201.6 1388.95 1484.69 1017.4 1161.13 1170.42 1161.01 1099.05 983.54 882.81 813.69 717.33
standard dev. 120.8 239.42 350.04 400.45 646.36 690.39 714.02 745.57 743.92 700.12 670.0 666.34 647.71
ci. min. 90% 576.93 1053.2 1171.98 1236.47 734.12 847.17 832.48 792.47 713.38 600.94 494.42 400.66 283.47
ci. max 90% 726.69 1350.01 1605.92 1732.91 1300.68 1475.1 1508.37 1529.56 1484.72 1366.14 1271.2 1226.72 1151.18
geom. mean 639.47 1175.37 1339.15 1419.1 712.81 787.55 774.57 743.51 687.48 609.86 536.07 484.35 410.7
median 688.74 1261.33 1533.67 1678.58 947.79 1552.52 1522.46 1635.27 1506.49 1333.4 1082.31 850.71 549.19
first quartile 611.48 1219.55 1329.32 1381.88 487.37 473.72 392.62 236.09 211.61 182.41 156.29 137.67 127.29
third quartile 733.92 1319.71 1637.53 1714.9 1628.33 1696.29 1743.25 1754.04 1729.54 1589.7 1518.61 1516.31 1336.18
minimum 378.93 679.47 672.5 638.12 97.06 99.2 98.07 100.07 97.93 101.93 98.52 101.46 98.49
maximum 747.24 1434.54 1752.81 1839.68 1872.54 1834.93 1783.78 1785.8 1762.01 1659.66 1534.98 1542.31 1545.01
qcow2 lvm2 difference -4.79 % -5.72 % 15.14 % -0.51 % 0.59 % -1.51 % -7.4 % 4.47 % -3.09 % -0.56 % -0.21 % -0.16 % -5.61 %
ttest p-value 0.9487 0.7308 0.6209 0.9123 0.9987 0.9516 0.8904 0.9942 0.9682 0.9852 0.9584 0.9751 0.9311
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
iwrite\_compare
Regression line
slope 0.9984
std. error 0.00618
ci. max 90% 0.98816
ci. min. 90% 1.00863
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Re-write

rewrite_FS
Re-write File size [kB] 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152
qcow2mean val. 1512.36 2060.72 2569.6 3123.42 3347.32 3504.05 3427.64 3297.16 3263.52 3250.89 3258.42 2896.69 299.79 160.84 136.47 128.17
standard dev. 193.29 343.55 391.22 206.86 312.08 272.67 343.0 360.44 363.27 373.03 384.77 319.86 18.09 11.64 2.23 1.43
ci. min. 90% 1328.08 1778.1 2282.27 2984.86 3153.87 3345.99 3240.2 3110.29 3083.94 3019.67 3019.92 2698.43 288.57 153.63 135.09 127.28
ci. max 90% 1696.64 2343.34 2856.94 3261.99 3540.76 3662.11 3615.08 3484.02 3443.09 3482.12 3496.92 3094.95 311.0 168.06 137.86 129.05
geom. mean 1501.43 2039.44 2543.7 3117.18 3333.99 3494.16 3411.26 3278.37 3244.33 3231.45 3237.79 2880.72 299.3 160.46 136.45 128.16
median 1562.19 1950.87 2521.79 3115.0 3310.93 3485.17 3574.33 3465.61 3423.08 3500.38 3522.09 3117.99 298.2 162.1 137.09 128.75
first quartile 1562.19 1880.77 2371.22 3065.79 3154.07 3364.12 3163.42 2932.18 2853.53 2835.86 2842.82 2579.19 285.34 158.87 134.66 128.09
third quartile 1562.19 2081.77 2792.6 3272.7 3585.47 3731.53 3644.82 3562.93 3571.37 3563.1 3594.92 3143.2 319.73 167.05 137.96 128.85
minimum 1181.86 1760.5 1968.03 2703.19 2763.4 2949.78 2892.22 2759.68 2730.8 2814.39 2812.2 2498.69 275.18 137.35 133.16 125.29
maximum 1693.37 2719.25 3169.76 3378.11 3789.56 3823.77 3787.35 3713.91 3704.64 3625.27 3634.49 3249.55 321.89 178.07 140.11 129.62
lvm2mean val. 1651.28 2384.88 2560.35 3211.05 3506.38 3583.24 3403.22 3333.96 3269.49 3245.36 3259.51 2872.64 253.16 134.32 109.8 100.08
standard dev. 293.65 298.33 448.26 335.17 327.87 273.37 341.41 339.79 350.75 372.42 382.15 300.51 9.65 5.1 1.86 1.73
ci. min. 90% 1371.31 2139.46 2231.12 2986.54 3303.15 3424.78 3216.65 3157.8 3096.11 3014.52 3022.63 2686.36 247.18 131.16 108.64 99.01
ci. max 90% 1931.25 2630.29 2889.58 3435.55 3709.61 3741.71 3589.79 3510.11 3442.88 3476.21 3496.38 3058.91 259.14 137.48 110.95 101.15
geom. mean 1631.22 2369.07 2527.89 3195.46 3491.38 3572.97 3386.67 3317.51 3251.68 3225.96 3239.11 2858.65 253.0 134.23 109.78 100.07
median 1610.16 2396.39 2451.06 3312.73 3663.77 3690.05 3558.41 3500.45 3449.65 3467.73 3535.68 2821.5 253.05 133.29 109.87 99.57
first quartile 1388.43 2177.68 2265.47 2917.33 3380.31 3505.32 3195.53 2994.82 2883.95 2833.88 2833.64 2562.92 244.56 131.33 108.51 99.33
third quartile 1785.65 2627.87 2868.9 3418.32 3702.58 3742.93 3663.05 3600.83 3565.11 3554.04 3571.62 3172.08 254.17 136.09 110.51 100.85
minimum 1388.43 1987.4 2032.89 2763.75 2754.33 2902.83 2777.77 2847.02 2790.41 2804.57 2804.07 2542.11 243.26 125.99 106.92 97.28
maximum 2083.72 2719.25 3169.76 3674.02 3775.91 3823.77 3703.74 3710.62 3689.97 3637.16 3622.57 3202.56 274.06 141.95 112.44 102.7
qcow2 lvm2 difference 3.07 % 22.84 % -2.81 % 6.35 % 10.66 % 5.88 % -0.45 % 1.01 % 0.78 % -0.93 % 0.39 % -9.51 % -15.14 % -17.77 % -19.86 % -22.66 %
ttest p-value 0.4027 0.1116 0.9679 0.5393 0.3074 0.5248 0.8688 0.7993 0.9663 0.9753 0.9953 0.8714 0.0 0.0 0.0 0.0
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME DIFF DIFF DIFF DIFF
rewrite_BS
Re-write Block size [kB] 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384
qcow2mean val. 2429.72 2797.88 2992.57 3138.69 2397.47 2466.15 2509.15 2484.32 2392.8 1969.63 1728.85 1604.18 1479.05
standard dev. 632.49 676.21 747.17 700.5 1445.55 1506.06 1549.69 1611.21 1635.35 1420.96 1341.32 1359.15 1392.03
ci. min. 90% 2037.67 2378.74 2529.43 2704.49 1763.94 1781.25 1775.68 1687.87 1545.0 1193.11 951.31 761.71 546.63
ci. max 90% 2821.77 3217.03 3455.7 3572.9 3031.0 3151.06 3242.62 3280.77 3240.61 2746.16 2506.39 2446.65 2411.48
geom. mean 2337.27 2710.61 2886.13 3053.69 1482.71 1484.07 1452.86 1362.41 1287.12 1070.0 897.27 789.09 688.38
median 2763.4 3135.21 3300.51 3515.8 3203.03 3154.07 3351.63 3495.32 3446.25 2952.99 2629.19 2566.98 1434.12
first quartile 1968.03 2336.37 3049.05 2719.25 1252.11 1206.96 906.77 285.34 282.62 248.9 192.11 159.04 157.79
third quartile 2838.45 3259.99 3481.18 3603.82 3554.13 3669.57 3597.75 3571.37 3505.8 2995.65 2810.81 2810.06 2837.6
minimum 1181.86 1562.19 1562.19 1693.37 126.29 128.75 128.75 128.09 128.7 129.16 125.29 128.85 129.62
maximum 2949.78 3321.69 3552.38 3823.77 3770.33 3796.08 3710.45 3738.56 3789.56 3361.08 2894.22 2817.4 2853.53
lvm2mean val. 2500.15 2814.12 3042.44 3132.8 2408.71 2593.35 2583.26 2495.92 2398.98 1978.32 1721.71 1599.51 1458.34
standard dev. 555.03 729.11 688.25 668.63 1449.42 1554.09 1607.04 1635.67 1669.78 1461.34 1357.41 1379.79 1402.29
ci. min. 90% 2156.12 2362.18 2615.83 2718.35 1773.48 1886.6 1822.64 1687.38 1533.31 1179.73 934.84 744.25 519.04
ci. max 90% 2844.19 3266.06 3469.05 3547.25 3043.94 3300.1 3343.87 3304.46 3264.64 2776.91 2508.57 2454.77 2397.65
geom. mean 2433.69 2710.83 2956.15 3056.78 1436.1 1467.56 1405.65 1298.2 1194.96 984.17 833.86 731.56 624.46
median 2793.2 3236.09 3310.93 3380.31 2890.1 3473.22 3580.36 3546.15 3479.89 2986.74 2659.94 2556.42 1403.09
first quartile 2032.89 2232.86 2719.25 2577.58 1631.31 1455.22 982.93 253.05 222.0 190.3 161.39 136.09 133.94
third quartile 2883.95 3294.94 3508.55 3597.25 3572.27 3663.57 3658.41 3636.62 3550.13 3016.17 2811.45 2804.07 2833.7
minimum 1388.43 1388.43 1610.16 1785.65 102.25 97.28 99.57 99.33 99.54 100.85 98.51 100.7 102.7
maximum 2902.83 3507.51 3690.86 3703.74 3758.66 3823.77 3767.1 3663.77 3772.51 3401.97 2857.2 2847.02 2836.89
qcow2 lvm2 difference 1.08 % 3.22 % 0.32 % -3.85 % -9.77 % 10.12 % 6.82 % 1.45 % 0.98 % 1.14 % 1.17 % -0.41 % -2.16 %
ttest p-value 0.8049 0.9616 0.8847 0.9857 0.9826 0.8216 0.9021 0.9856 0.9928 0.9889 0.9907 0.9943 0.9768
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
rewrite\_compare
Regression line
slope 1.01433
std. error 0.00823
ci. max 90% 1.00071
ci. min. 90% 1.02796
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Read

iread_FS
Read File size [kB] 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152
qcow2mean val. 4907.85 5043.72 5621.1 6258.21 6649.97 6619.57 6044.69 5926.03 5801.72 5554.76 5556.28 5570.61 5570.81 5570.6 124.04 126.58
standard dev. 1340.7 551.73 1640.8 1340.73 1007.41 407.93 609.86 628.6 751.3 735.47 760.07 776.57 788.58 799.57 5.01 0.83
ci. min. 90% 3629.64 4589.84 4416.0 5360.14 6025.53 6383.1 5711.41 5600.15 5430.34 5098.88 5085.15 5089.25 5082.01 5074.99 120.93 126.06
ci. max 90% 6186.07 5497.6 6826.19 7156.28 7274.41 6856.04 6377.96 6251.92 6173.1 6010.65 6027.41 6051.96 6059.61 6066.22 127.15 127.1
geom. mean 4734.28 5016.32 5458.9 6148.56 6589.75 6608.06 6014.06 5893.74 5754.33 5510.34 5509.28 5521.51 5520.15 5518.49 123.95 126.58
median 5263.33 5308.43 5301.04 5717.51 6328.1 6711.93 6173.07 6055.88 5941.04 5979.1 5933.61 5966.57 5996.99 5999.67 124.95 126.73
first quartile 4457.8 4881.26 4951.09 5637.93 6142.75 6331.29 5835.63 5847.84 5164.68 4715.55 4690.32 4673.08 4672.2 4642.18 124.05 126.38
third quartile 5722.96 5415.88 5383.24 6415.72 6670.27 6797.61 6354.37 6261.55 6359.34 6043.45 6024.57 6042.32 6048.85 6055.8 126.25 126.96
minimum 2824.65 4039.02 4164.23 4902.11 5586.4 5850.59 4571.69 4804.61 4660.72 4651.81 4672.93 4651.5 4637.18 4638.81 111.99 124.95
maximum 6270.53 5415.88 9213.74 9086.22 9004.41 7245.26 6790.18 6927.29 6756.96 6415.21 6562.76 6591.84 6597.95 6600.5 130.0 127.79
lvm2mean val. 5381.29 6005.62 6322.21 6023.86 6575.22 6674.7 6091.87 5959.87 5810.67 5535.32 5568.12 5565.96 5570.71 5564.26 101.78 101.29
standard dev. 2041.9 1924.52 1253.2 1608.26 1074.98 441.77 497.66 731.65 782.71 734.53 774.28 769.89 802.82 807.03 0.88 0.37
ci. min. 90% 3434.56 4422.43 5401.79 4946.59 5908.89 6418.61 5819.91 5580.57 5423.76 5080.02 5088.18 5088.74 5073.09 5064.02 101.24 101.06
ci. max 90% 7328.02 7588.8 7242.63 7101.13 7241.55 6930.78 6363.83 6339.18 6197.57 5990.61 6048.06 6043.17 6068.34 6064.5 102.33 101.52
geom. mean 5028.83 5785.07 6231.34 5841.55 6505.22 6661.79 6071.51 5915.72 5759.78 5491.18 5519.37 5517.61 5518.21 5511.18 101.78 101.29
median 5159.74 5455.91 5831.72 5978.29 6366.53 6572.13 6152.7 6148.28 5954.75 5862.11 5986.28 5977.73 5979.92 5975.86 101.68 101.27
first quartile 4457.8 4914.17 5635.11 5208.19 5778.82 6327.18 5988.34 5674.97 5242.55 4690.66 4689.66 4676.67 4648.98 4641.75 101.4 100.95
third quartile 6933.98 6354.88 6368.95 6331.35 6756.23 6984.54 6389.43 6521.43 6392.66 6042.36 6015.12 6011.33 6058.16 6036.25 102.05 101.43
minimum 2600.49 4167.44 5438.51 3699.95 5586.4 6137.38 4796.5 4672.79 4612.35 4667.34 4659.3 4659.78 4631.06 4617.73 100.3 100.83
maximum 7754.43 9566.3 8977.1 9086.22 9004.41 7411.7 6590.14 6750.3 6896.54 6465.89 6561.48 6534.95 6590.13 6594.72 103.56 101.96
qcow2 lvm2 difference -1.97 % 2.78 % 10.01 % 4.56 % 0.61 % -2.08 % -0.33 % 1.53 % 0.23 % -1.96 % 0.89 % 0.19 % -0.28 % -0.4 % -18.62 % -20.09 %
ttest p-value 0.6762 0.2665 0.3866 0.7562 0.8809 0.7752 0.8444 0.9044 0.9765 0.9559 0.9743 0.99 0.9998 0.9868 0.0 0.0
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME DIFF DIFF
iread_BS
Read Block size [kB] 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384
qcow2mean val. 5008.28 6213.78 5839.87 5907.47 5504.78 5331.46 5510.73 5512.62 5411.95 4403.63 3757.19 3671.78 3545.17
standard dev. 1113.19 769.44 839.86 546.55 2149.41 2151.63 2451.0 2546.2 2619.31 2144.26 1915.08 2010.9 2108.97
ci. min. 90% 4318.26 5736.84 5319.28 5568.7 4562.78 4352.96 4350.67 4253.99 4054.03 3231.84 2647.06 2425.33 2132.51
ci. max 90% 5698.29 6690.72 6360.46 6246.25 6446.78 6309.95 6670.8 6771.25 6769.87 5575.42 4867.32 4918.24 4957.83
geom. mean 4878.22 6168.07 5783.67 5885.01 3837.49 3644.03 3619.3 3517.5 3333.69 2677.02 2262.52 2098.83 1906.17
median 5586.4 6670.27 5984.97 6059.37 6397.42 6294.27 5988.05 6013.93 6046.15 5171.52 4649.17 4651.5 4672.46
first quartile 4164.23 5686.33 5200.98 5415.88 5651.84 5730.97 5934.42 5997.65 6016.55 5134.64 4588.47 4637.18 3513.69
third quartile 5850.59 6756.96 6464.71 6359.34 6570.03 6338.57 6206.47 6182.17 6088.46 5273.27 4670.2 4680.52 4693.86
minimum 2824.65 4774.69 4457.8 5263.33 124.95 124.77 121.9 126.27 126.19 111.99 124.05 124.95 126.96
maximum 6051.51 6927.29 6804.48 6711.93 7044.48 6513.88 9213.74 9086.22 9004.41 6265.74 4804.61 4830.89 4715.75
lvm2mean val. 5122.3 6105.98 6092.66 6011.1 5731.13 5653.4 5521.36 5485.53 5429.69 4411.15 3762.63 3645.37 3529.15
standard dev. 1292.91 955.16 644.75 638.82 2258.42 2421.84 2443.65 2551.52 2638.81 2163.36 1930.23 2009.13 2114.91
ci. min. 90% 4320.88 5513.93 5693.01 5615.12 4741.35 4552.02 4364.77 4224.27 4061.65 3228.93 2643.7 2400.02 2112.51
ci. max 90% 5923.71 6698.04 6492.31 6407.07 6720.91 6754.77 6677.94 6746.8 6797.72 5593.38 4881.55 4890.73 4945.79
geom. mean 4941.62 6033.6 6060.83 5980.08 3872.63 3710.33 3527.3 3384.69 3222.58 2601.15 2174.64 1991.54 1798.98
median 5831.69 6590.14 6327.18 6252.64 6500.42 6327.18 5983.1 6011.33 6039.3 5154.72 4648.86 4659.3 4655.33
first quartile 4167.44 5586.4 5710.84 5325.35 6052.02 6145.14 5953.26 5891.08 5967.64 5133.59 4617.02 4617.73 3507.21
third quartile 5964.4 6773.5 6509.35 6557.69 6591.28 6387.2 6349.64 6152.7 6297.24 5223.68 4685.03 4672.79 4689.91
minimum 2600.49 4457.8 4856.7 5159.74 101.41 101.27 100.9 101.19 100.83 100.3 100.95 101.62 101.96
maximum 6137.38 7068.22 6933.98 6690.52 7754.43 9566.3 8977.1 9086.22 9004.41 6327.18 4796.5 4679.9 4694.96
qcow2 lvm2 difference 4.39 % -1.2 % 5.72 % 3.19 % 1.61 % 0.52 % -0.08 % -0.04 % -0.11 % -0.32 % -0.01 % 0.17 % -0.37 %
ttest p-value 0.8436 0.7954 0.4842 0.7164 0.7735 0.7032 0.9909 0.9786 0.987 0.9935 0.995 0.9781 0.9881
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
iread\_compare
Regression line
slope 1.01824
std. error 0.01569
ci. max 90% 0.99227
ci. min. 90% 1.04421
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Re-read

reread_FS
Re-read File size [kB] 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152
qcow2mean val. 4881.19 6464.43 5966.7 6836.17 8006.68 7342.72 6214.45 5954.37 5861.61 5572.46 5556.26 5564.96 5564.11 5556.99 128.36 129.84
standard dev. 1134.7 2148.13 1207.76 1582.43 1225.31 608.52 645.52 745.7 764.63 771.87 777.73 796.69 812.23 809.38 1.26 0.49
ci. min. 90% 3799.38 4697.29 5079.66 5776.2 7247.18 6989.97 5861.69 5567.78 5483.64 5094.01 5074.18 5071.13 5060.65 5055.29 127.57 129.53
ci. max 90% 5963.0 8231.57 6853.74 7896.13 8766.19 7695.46 6567.22 6340.96 6239.58 6050.9 6038.34 6058.78 6067.57 6058.69 129.14 130.15
geom. mean 4762.68 6217.38 5865.43 6678.76 7925.01 7319.24 6180.46 5908.68 5812.69 5523.85 5506.78 5513.19 5510.21 5503.5 128.35 129.84
median 4872.05 5721.71 5799.46 6535.84 7628.7 7617.23 6307.68 6146.92 6035.08 5979.1 5963.0 6002.93 6015.87 5979.2 128.48 129.7
first quartile 4872.05 5268.83 5440.85 5840.2 6900.73 6913.17 5978.41 5651.48 5296.34 4694.93 4672.6 4655.38 4636.92 4622.39 128.32 129.59
third quartile 5263.33 6749.25 6353.41 7814.24 8927.74 7812.04 6671.93 6432.55 6415.27 6058.18 6040.56 6024.42 6060.59 6037.6 129.1 130.23
minimum 3128.0 4606.87 4300.87 4856.7 6800.04 6370.42 4608.1 4532.66 4648.46 4647.78 4629.33 4626.25 4603.42 4616.82 125.25 128.97
maximum 6270.53 10526.67 8078.04 9086.22 9896.76 7998.25 6933.29 6914.44 6765.14 6566.81 6552.67 6606.84 6600.3 6607.22 129.52 130.42
lvm2mean val. 5110.34 6881.09 7034.59 7356.06 7421.52 7704.68 6103.11 5871.39 5850.6 5569.7 5562.76 5564.87 5561.78 5563.0 102.36 101.47
standard dev. 1455.11 1388.75 1919.35 1460.71 1170.24 678.65 636.39 665.99 772.29 753.88 790.84 802.27 807.81 812.5 0.86 0.5
ci. min. 90% 3723.05 5738.66 5624.92 6377.62 6696.15 7311.28 5755.34 5526.12 5468.84 5102.41 5072.56 5067.58 5061.06 5059.37 101.83 101.16
ci. max 90% 6497.63 8023.53 8444.26 8334.5 8146.89 8098.08 6450.88 6216.66 6232.36 6037.0 6052.97 6062.15 6062.5 6066.63 102.9 101.78
geom. mean 4922.76 6760.66 6821.87 7220.44 7339.84 7676.43 6069.42 5834.84 5800.78 5523.06 5511.57 5512.35 5508.49 5509.14 102.36 101.47
median 5159.74 6987.08 6248.75 7495.81 7348.04 7893.14 6154.96 5934.95 6085.97 5962.37 5986.41 5982.46 5994.08 5981.93 102.52 101.66
first quartile 4783.15 5704.3 5566.38 6596.87 6494.68 7488.42 5968.88 5660.01 5213.23 4687.88 4657.93 4642.89 4636.07 4633.65 101.95 101.17
third quartile 5722.96 8111.98 8551.82 8381.53 8341.8 8081.19 6424.88 6287.44 6446.08 6106.69 6057.06 6042.86 6052.87 6042.31 102.64 101.7
minimum 2951.88 5200.98 5119.86 5104.97 5708.04 6433.94 4499.35 4683.88 4678.59 4620.26 4604.95 4614.8 4606.12 4610.62 100.85 100.7
maximum 6933.98 8347.78 9637.14 9086.22 9181.81 8623.11 7005.67 6873.36 6759.69 6462.16 6548.67 6597.99 6575.4 6592.41 104.06 102.16
qcow2 lvm2 difference 5.9 % 22.12 % 7.75 % 14.69 % -3.68 % 3.62 % -2.42 % -3.45 % 0.84 % -0.28 % 0.39 % -0.34 % -0.36 % 0.05 % -20.21 % -21.62 %
ttest p-value 0.7883 0.6983 0.2366 0.5059 0.3156 0.2253 0.6881 0.7764 0.9712 0.994 0.9862 0.9998 0.9952 0.9877 0.0 0.0
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME DIFF DIFF
reread_BS
Re-read Block size [kB] 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384
qcow2mean val. 5725.04 6307.61 6025.87 6311.37 6155.06 5766.35 5867.0 5742.42 5462.81 4430.36 3722.8 3670.74 3519.77
standard dev. 1217.82 986.84 1094.46 790.26 2697.17 2361.12 2686.83 2733.55 2654.48 2161.1 1894.55 2009.1 2092.52
ci. min. 90% 4970.17 5695.91 5347.47 5821.53 4972.99 4692.59 4595.32 4391.18 4086.66 3249.37 2624.57 2425.4 2118.12
ci. max 90% 6479.9 6919.3 6704.27 6801.21 7337.13 6840.11 7138.68 7093.66 6838.96 5611.35 4821.04 4916.08 4921.41
geom. mean 5584.67 6237.21 5928.64 6267.54 4197.45 3911.27 3817.65 3637.47 3369.58 2729.43 2258.37 2110.3 1900.2
median 5852.03 6765.14 6677.63 6562.82 6559.74 6362.78 6025.04 6029.06 6049.37 5159.66 4617.26 4631.84 4633.12
first quartile 5200.98 5327.98 4872.05 5553.73 6133.65 6193.22 5967.05 6018.68 6023.29 5128.11 4551.52 4603.42 3499.39
third quartile 6844.43 6914.44 6751.66 6732.96 6608.14 6698.89 7546.51 6307.68 6333.09 5248.96 4642.4 4694.93 4655.81
minimum 3128.0 4872.05 4300.87 5263.33 128.32 129.44 125.25 128.48 128.34 129.13 128.06 129.1 129.0
maximum 6907.36 7812.04 7042.01 7662.19 10526.67 7812.04 8931.44 9086.22 9262.92 6370.42 4672.6 4863.1 4697.59
lvm2mean val. 5767.04 6260.26 6538.04 7085.77 5818.75 6127.28 5786.91 5730.73 5516.68 4449.9 3720.1 3641.65 3517.66
standard dev. 1402.29 1209.41 573.12 1314.97 2308.75 2643.62 2629.54 2758.86 2712.39 2185.83 1907.66 2007.12 2107.59
ci. min. 90% 4897.83 5510.61 6182.79 6270.69 4806.91 4925.05 4542.34 4366.97 4110.51 3255.39 2614.27 2397.54 2105.92
ci. max 90% 6636.24 7009.9 6893.29 7900.86 6830.59 7329.52 7031.47 7094.48 6922.86 5644.41 4825.94 4885.76 4929.4
geom. mean 5593.27 6155.43 6514.98 6981.57 3923.79 3974.23 3659.56 3498.31 3263.52 2621.18 2156.26 1991.96 1796.04
median 5708.04 6759.69 6454.7 6925.73 6505.41 6410.36 5984.44 6021.1 6054.96 5183.87 4618.02 4610.62 4639.48
first quartile 5610.27 5119.86 6249.89 6482.94 6094.39 6384.09 5962.58 5978.04 6030.82 5130.65 4528.21 4604.95 3501.25
third quartile 5822.49 7005.67 6933.98 7404.6 6593.81 7171.63 7201.63 6113.7 6203.32 5334.57 4634.45 4687.88 4663.09
minimum 2951.88 4783.15 5415.88 5159.74 101.7 100.77 100.7 101.7 101.41 100.85 101.17 101.93 102.16
maximum 8347.78 8028.87 7411.7 9549.38 7949.61 9637.14 8931.44 9086.22 9181.81 6433.94 4695.95 4728.1 4685.91
qcow2 lvm2 difference -2.46 % -0.08 % -3.34 % 5.53 % -0.83 % 0.75 % -0.67 % -0.13 % 0.09 % 0.47 % 0.02 % -0.46 % 0.14 %
ttest p-value 0.9468 0.9286 0.2315 0.1495 0.7074 0.6963 0.9371 0.9914 0.9612 0.9834 0.9975 0.9759 0.9984
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
reread\_compare
Regression line
slope 1.01485
std. error 0.02077
ci. max 90% 0.98046
ci. min. 90% 1.04924
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Random read

randrd_FS
Random read File size [kB] 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152
qcow2mean val. 5893.51 5773.37 6926.03 8020.8 8234.67 7906.74 6483.99 5739.0 5594.24 5499.03 5473.43 5465.99 5460.42 5446.22 133.78 70.27
standard dev. 1295.11 1407.05 1686.22 1207.31 960.97 994.35 1003.47 682.86 670.37 713.39 716.63 720.42 707.76 698.65 85.53 47.47
ci. min. 90% 4658.77 4615.88 5687.58 7212.1 7639.02 7330.34 5935.62 5384.99 5262.86 5056.84 5029.23 5019.44 5021.71 5013.16 80.77 40.85
ci. max 90% 7128.26 6930.87 8164.49 8829.5 8830.32 8483.14 7032.37 6093.01 5925.61 5941.22 5917.63 5912.54 5899.12 5879.28 186.8 99.7
geom. mean 5790.28 5641.97 6756.7 7935.81 8178.68 7847.66 6406.54 5699.88 5555.79 5456.89 5430.57 5422.72 5418.52 5405.21 100.97 51.42
median 5263.33 5563.36 6103.27 8199.89 8545.75 8076.11 6732.96 6058.76 5910.69 5942.31 5908.41 5883.46 5881.01 5871.09 139.93 69.22
first quartile 5159.74 5415.88 5881.19 7337.95 7992.11 7225.99 5987.57 5033.06 4832.21 4670.1 4636.37 4623.78 4640.88 4621.14 50.9 27.75
third quartile 6270.53 5710.84 8081.43 8970.13 8852.37 8758.18 7168.91 6117.2 6168.2 5983.63 6006.64 5979.6 5993.91 5999.18 218.78 111.65
minimum 4783.15 4039.02 4904.34 5877.57 6054.08 6115.01 4535.85 4624.49 4648.46 4649.23 4594.7 4621.27 4607.7 4606.44 20.37 9.46
maximum 7990.81 8347.78 9549.38 9246.47 9262.92 9051.1 7619.75 6632.88 6382.32 6364.41 6297.93 6276.05 6256.59 6182.09 241.52 133.12
lvm2mean val. 5774.07 5830.08 6814.62 7091.68 7774.56 7941.57 6446.62 5751.28 5599.31 5506.4 5469.06 5470.93 5467.3 5455.87 112.77 59.49
standard dev. 859.33 1413.56 1794.53 904.12 948.16 1074.46 868.88 690.86 722.25 716.12 734.24 711.93 715.22 701.77 66.06 37.46
ci. min. 90% 4954.79 4667.23 5496.62 6486.07 7186.84 7318.72 5971.79 5393.12 5242.29 5062.52 5013.95 5029.63 5023.97 5020.89 71.82 36.26
ci. max 90% 6593.35 6992.93 8132.62 7697.3 8362.28 8564.41 6921.44 6109.44 5956.33 5950.29 5924.18 5912.22 5910.63 5890.86 153.72 82.71
geom. mean 5723.34 5695.91 6611.1 7043.7 7719.27 7871.17 6389.13 5711.46 5554.58 5463.81 5424.18 5428.6 5424.54 5414.59 89.34 45.42
median 5722.96 5710.84 6602.89 7102.14 7931.65 8459.85 6711.41 5999.59 5880.14 5938.1 5845.36 5887.27 5871.94 5863.49 126.42 60.43
first quartile 5159.74 5328.44 5396.9 6496.64 7465.75 7186.67 5868.98 5080.95 4749.12 4661.34 4627.25 4636.84 4626.69 4632.72 49.53 26.27
third quartile 6270.53 5905.96 8193.51 7363.45 8131.56 8649.81 7000.77 6259.9 6090.95 6034.21 6000.86 5997.03 5981.59 5989.08 174.0 92.27
minimum 4783.15 4039.02 4623.23 5877.57 5818.91 6040.16 4739.59 4692.4 4592.47 4634.94 4601.63 4611.63 4601.82 4609.16 20.32 9.06
maximum 6933.98 8347.78 9295.42 8931.44 9004.41 9051.1 7517.33 6667.14 6430.63 6300.47 6285.54 6240.3 6244.36 6176.72 193.82 106.93
qcow2 lvm2 difference 8.73 % 2.65 % 8.19 % -13.39 % -7.19 % 4.75 % -0.32 % -0.98 % -0.52 % -0.07 % -1.07 % 0.06 % -0.15 % -0.13 % -9.65 % -12.7 %
ttest p-value 0.8678 0.9459 0.9067 0.1034 0.3218 0.9409 0.9265 0.9655 0.9853 0.9828 0.99 0.9885 0.9839 0.977 0.5678 0.6
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
randrd_BS
Random read Block size [kB] 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384
qcow2mean val. 5503.03 6945.47 6686.68 6964.84 6346.97 5908.01 5808.16 5708.15 5384.37 4279.2 3730.32 3661.77 3532.54
standard dev. 860.63 1256.87 1206.8 1280.79 2777.09 2687.03 2662.78 2730.5 2610.47 2072.87 1879.54 1974.0 2072.13
ci. min. 90% 4969.57 6166.4 5938.64 6170.95 5129.88 4686.04 4547.86 4358.41 4031.03 3146.43 2640.79 2438.18 2144.55
ci. max 90% 6036.49 7724.54 7434.72 7758.74 7564.06 7129.99 7068.46 7057.88 6737.71 5411.98 4819.85 4885.35 4920.52
geom. mean 5441.12 6837.62 6592.21 6861.87 3271.6 3190.69 3189.67 3272.65 3185.82 2654.83 2347.51 2239.47 2035.86
median 5634.09 7146.5 6374.56 6632.88 6331.17 6126.73 5956.21 5997.32 5986.75 5093.51 4614.49 4621.14 4629.81
first quartile 4904.34 5975.0 5831.72 6103.27 6163.21 6010.88 5881.62 5944.17 5934.88 4957.02 4553.49 4594.7 3510.93
third quartile 6054.08 7642.6 7261.46 7619.75 8129.54 6658.89 7348.94 6483.18 6106.77 5118.3 4631.12 4648.46 4648.19
minimum 4039.02 4783.15 5159.74 5263.33 9.46 17.51 27.75 45.36 69.22 94.53 111.65 123.82 133.12
maximum 6826.63 8608.6 8767.31 8852.37 9549.38 9262.92 8931.44 8931.44 8778.26 6115.01 4683.82 4839.95 4729.37
lvm2mean val. 5366.73 6089.78 6907.31 6837.58 6012.68 5907.08 5764.26 5759.29 5436.65 4327.62 3740.64 3637.56 3511.09
standard dev. 819.72 945.26 935.88 933.86 2594.09 2539.82 2639.72 2791.93 2665.27 2102.28 1901.15 1979.16 2080.54
ci. min. 90% 4858.62 5503.87 6327.21 6258.73 4875.79 4752.05 4514.88 4379.19 4054.9 3178.77 2638.58 2410.78 2117.47
ci. max 90% 5874.83 6675.7 7487.41 7416.43 7149.57 7062.11 7013.65 7139.39 6818.4 5476.47 4842.69 4864.35 4904.71
geom. mean 5309.3 6024.06 6852.89 6782.49 3117.67 3197.48 3151.14 3251.14 3146.06 2599.52 2263.0 2128.5 1919.62
median 5479.52 6010.32 6602.89 6933.98 6293.01 6243.87 5912.69 5959.03 5998.95 5114.18 4615.32 4611.36 4629.7
first quartile 4749.12 5200.98 6245.23 6369.72 6060.25 6174.65 5865.6 5938.78 5987.04 5081.38 4596.64 4601.82 3494.73
third quartile 5877.57 6862.39 7196.74 7272.92 7251.03 7117.14 7170.12 6711.41 6101.37 5170.43 4633.02 4646.85 4640.58
minimum 4039.02 4783.15 5722.96 5673.94 9.06 16.92 26.27 42.2 60.43 80.57 92.27 100.72 106.93
maximum 6473.66 7519.29 8347.78 8658.71 9295.42 8897.49 8623.11 8931.44 9004.41 6040.16 4739.59 4692.4 4658.14
qcow2 lvm2 difference -2.74 % -15.9 % 3.58 % 4.54 % -0.6 % 1.91 % -0.73 % -0.64 % 0.2 % 0.41 % 0.02 % -0.21 % -0.0 %
ttest p-value 0.7353 0.1221 0.6705 0.8127 0.7274 0.9992 0.9654 0.9627 0.9617 0.9572 0.9904 0.9796 0.9838
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
randrd\_compare
Regression line
slope 0.98102
std. error 0.0164
ci. max 90% 0.95387
ci. min. 90% 1.00817
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Random write

randwr_FS
Random write File size [kB] 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152
qcow2mean val. 2496.93 2274.88 3138.11 3520.03 4115.12 4094.0 3458.17 3325.24 3307.37 3385.48 3378.14 2896.03 230.63 114.3 87.22 78.19
standard dev. 494.6 217.86 621.7 334.95 420.12 493.92 369.46 413.48 412.78 407.29 403.1 373.29 24.3 34.51 35.12 34.9
ci. min. 90% 2025.39 2095.66 2681.5 3295.67 3854.71 3807.68 3256.27 3110.88 3103.32 3133.02 3128.28 2664.65 215.57 92.91 65.45 56.56
ci. max 90% 2968.48 2454.1 3594.72 3744.39 4375.53 4380.32 3660.07 3539.6 3511.41 3637.94 3628.01 3127.41 245.69 135.7 108.99 99.83
geom. mean 2457.43 2265.46 3085.49 3505.34 4094.29 4065.57 3438.96 3300.95 3282.98 3363.17 3356.27 2874.08 229.5 109.39 79.44 69.12
median 2477.6 2363.73 3006.19 3572.42 4351.81 4132.78 3574.33 3300.05 3305.72 3665.97 3658.61 2877.31 221.66 122.93 101.11 91.67
first quartile 2152.15 2237.52 2780.53 3417.31 3862.85 4026.84 3252.33 3040.25 2910.71 2917.34 2923.15 2639.23 216.03 80.25 58.02 47.95
third quartile 2824.65 2396.28 3574.59 3680.5 4388.24 4339.62 3748.88 3645.89 3706.28 3731.4 3709.94 3250.06 245.0 144.65 115.73 105.96
minimum 1902.27 1867.08 2275.53 2857.91 3216.97 3230.36 2715.72 2596.73 2605.48 2910.13 2897.66 2379.05 199.67 67.79 32.84 23.3
maximum 3128.0 2452.17 3974.8 4003.68 4425.28 4805.01 3816.64 3892.71 3789.58 3797.81 3784.31 3313.14 266.51 156.28 127.17 117.14
lvm2mean val. 1979.55 2288.73 3144.76 3491.08 4125.96 4009.25 3387.37 3352.06 3288.54 3377.64 3373.64 2872.57 224.62 102.43 73.64 65.39
standard dev. 228.95 335.23 608.09 419.29 587.48 474.63 419.23 421.7 433.69 412.47 398.31 358.16 37.35 24.66 27.27 27.24
ci. min. 90% 1761.28 2012.95 2698.14 3210.23 3761.81 3734.11 3158.27 3133.44 3074.16 3121.97 3126.75 2650.56 201.47 87.14 56.73 48.51
ci. max 90% 2197.83 2564.51 3591.37 3771.94 4490.11 4284.38 3616.47 3570.68 3502.92 3633.31 3620.54 3094.57 247.77 117.71 90.54 82.28
geom. mean 1968.24 2267.51 3092.43 3467.64 4084.8 3981.44 3362.22 3326.57 3261.28 3354.69 3352.24 2852.29 221.33 99.5 67.9 58.63
median 2019.51 2323.81 3248.32 3547.38 4237.5 4099.0 3626.87 3453.0 3277.95 3662.57 3596.31 2883.86 247.29 114.14 86.95 76.84
first quartile 1959.14 2110.45 2779.51 3372.71 3983.93 3842.65 3096.22 3008.6 2900.65 2901.95 2925.03 2629.63 209.99 83.39 49.83 41.44
third quartile 2083.72 2487.23 3546.0 3631.13 4525.55 4303.97 3662.93 3699.58 3707.1 3707.18 3725.49 3184.39 249.27 123.93 95.2 88.74
minimum 1610.16 1784.47 2213.09 2658.64 2931.43 2975.94 2593.96 2574.81 2511.86 2893.82 2899.19 2380.3 141.5 61.67 27.46 19.73
maximum 2225.22 2719.25 3900.87 4162.62 4855.61 4522.63 3875.71 3864.47 3801.38 3799.96 3741.84 3310.92 255.57 126.38 98.57 90.56
qcow2 lvm2 difference -18.49 % -1.69 % 8.05 % -0.7 % -2.63 % -0.82 % 1.47 % 4.63 % -0.84 % -0.09 % -1.7 % 0.23 % 11.56 % -7.15 % -14.01 % -16.17 %
ttest p-value 0.0665 0.9341 0.9842 0.8809 0.9647 0.7002 0.6788 0.8764 0.9107 0.9682 0.9813 0.8935 0.6914 0.4133 0.3732 0.3987
ttest equality DIFF SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
randwr_BS
Random write Block size [kB] 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384
qcow2mean val. 2613.1 3284.88 3169.19 3442.14 2650.92 2773.4 2719.77 2705.91 2510.02 2054.46 1747.98 1654.34 1470.52
standard dev. 460.9 599.57 717.49 552.67 1644.59 1742.01 1749.7 1819.89 1781.86 1517.12 1389.5 1425.7 1404.36
ci. min. 90% 2327.42 2913.24 2724.45 3099.57 1930.16 1981.19 1891.64 1806.3 1586.25 1225.38 942.51 770.62 529.83
ci. max 90% 2898.79 3656.53 3613.92 3784.72 3371.68 3565.61 3547.91 3605.51 3433.79 2883.53 2553.45 2538.06 2411.21
geom. mean 2575.7 3233.2 3088.54 3400.9 1240.45 1292.06 1255.9 1259.9 1209.37 1015.21 843.7 762.49 660.6
median 2605.48 3228.37 3305.72 3489.65 3376.58 3780.52 3689.93 3724.38 3585.6 3097.61 2618.61 2639.23 1330.77
first quartile 2275.53 3051.12 2717.89 3128.0 1860.77 1284.38 961.83 216.39 226.65 189.67 162.49 150.8 149.0
third quartile 2857.91 3745.56 3508.55 3737.57 3677.99 3845.26 3785.61 3760.18 3692.96 3207.6 2902.25 2910.71 2878.68
minimum 1867.08 2195.46 1902.27 2452.17 23.3 36.06 47.95 70.52 91.67 105.96 102.82 108.31 117.14
maximum 3230.36 4116.49 4149.07 4254.7 4805.01 4566.95 4351.81 4425.28 4425.28 3321.16 2951.76 2918.77 2923.15
lvm2mean val. 2428.26 3026.57 3194.81 3407.8 2591.51 2803.46 2719.73 2693.93 2522.28 2057.0 1742.63 1637.47 1457.01
standard dev. 473.31 562.12 703.6 775.7 1624.19 1771.25 1750.91 1812.23 1796.96 1532.34 1390.11 1423.54 1417.26
ci. min. 90% 2134.88 2678.15 2758.69 2926.98 1879.68 1997.96 1891.02 1798.11 1590.69 1219.62 936.81 755.09 507.68
ci. max 90% 2721.64 3375.0 3630.94 3888.61 3303.33 3608.97 3548.44 3589.75 3453.88 2894.39 2548.45 2519.85 2406.34
geom. mean 2382.59 2975.63 3115.87 3322.99 1153.23 1291.25 1233.63 1235.81 1172.69 973.26 813.03 715.8 598.22
median 2574.81 3031.44 3299.09 3536.55 3390.35 3740.91 3672.27 3707.18 3652.1 3105.32 2616.59 2629.63 1321.54
first quartile 2213.09 2960.8 3248.32 2746.36 1550.01 1331.08 907.78 222.02 220.21 185.04 154.77 124.78 119.43
third quartile 2658.64 3378.11 3384.0 3672.93 3672.43 3854.07 3749.86 3755.89 3707.97 3172.46 2898.94 2888.54 2878.36
minimum 1610.16 2082.11 1959.14 2083.72 19.73 33.98 41.44 62.49 76.84 85.87 88.91 88.74 90.56
maximum 2975.94 3773.88 4048.94 4525.55 4564.95 4855.61 4464.86 4311.12 4383.65 3514.57 2940.07 2899.19 2925.03
qcow2 lvm2 difference -1.18 % -6.1 % -0.2 % 1.34 % 0.41 % -1.05 % -0.48 % -0.46 % 1.85 % 0.25 % -0.08 % -0.36 % -0.69 %
ttest p-value 0.4136 0.3598 0.94 0.9152 0.9188 0.963 1.0 0.9867 0.9868 0.9969 0.9932 0.9803 0.985
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
randwr\_compare
Regression line
slope 0.99047
std. error 0.0074
ci. max 90% 0.97822
ci. min. 90% 1.00272
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Backwards read

bkwdrd_FS
Backwards read File size [kB] 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152
qcow2mean val. 2197.88 2927.14 3674.31 4597.99 5318.56 5651.03 5664.08 5636.72 5593.7 5444.22 5494.47 5524.44 5523.95 5522.69 192.31 85.95
standard dev. 240.69 256.31 458.1 431.13 399.01 542.65 492.32 619.33 662.91 696.86 721.7 738.66 745.35 755.27 104.64 45.1
ci. min. 90% 1968.41 2716.29 3337.86 4309.2 5071.23 5336.47 5395.04 5315.64 5266.01 5012.27 5047.13 5066.59 5061.94 5054.54 127.45 58.0
ci. max 90% 2427.35 3137.98 4010.76 4886.78 5565.88 5965.6 5933.12 5957.79 5921.4 5876.17 5941.81 5982.3 5985.95 5990.85 257.17 113.91
geom. mean 2187.45 2917.56 3648.59 4580.57 5304.29 5626.9 5643.21 5603.84 5556.07 5403.88 5451.46 5479.54 5478.2 5475.7 165.39 74.26
median 2152.15 2975.68 3843.67 4631.82 5434.4 5764.16 5831.89 5795.41 5799.34 5820.42 5885.61 5944.9 5962.09 5952.59 161.71 74.88
first quartile 2004.07 2764.37 3377.33 4282.08 5205.11 5351.96 5542.32 5192.87 5017.18 4651.81 4655.91 4674.95 4681.19 4642.98 107.73 47.59
third quartile 2387.34 3106.19 3971.39 4812.13 5498.52 5903.54 5989.08 6185.37 6125.42 5912.73 5950.18 5988.33 5992.77 6003.68 283.12 128.45
minimum 1944.61 2547.49 3014.83 4003.68 4406.68 4650.5 4650.25 4576.56 4596.56 4629.5 4653.57 4635.64 4635.41 4628.5 64.61 26.71
maximum 2501.24 3220.33 4164.23 5379.99 5810.85 6370.42 6105.68 6249.89 6387.79 6327.8 6380.87 6405.82 6431.83 6450.47 348.03 145.14
lvm2mean val. 2240.54 3145.11 4091.91 4729.0 5328.87 5857.48 5682.22 5624.59 5587.48 5454.05 5504.08 5519.41 5526.3 5527.62 167.87 75.43
standard dev. 308.97 502.32 345.72 410.02 317.59 458.96 505.33 626.71 643.55 684.86 724.65 726.58 753.35 761.74 80.28 34.32
ci. min. 90% 1945.98 2731.89 3838.0 4454.35 5132.01 5591.43 5406.07 5299.68 5269.36 5029.54 5054.91 5069.04 5059.34 5055.45 118.11 54.15
ci. max 90% 2535.11 3558.34 4345.83 5003.65 5525.73 6123.53 5958.37 5949.5 5905.6 5878.56 5953.25 5969.78 5993.27 5999.78 217.63 96.71
geom. mean 2221.08 3113.8 4079.54 4713.78 5320.46 5841.95 5660.69 5590.14 5551.82 5415.13 5460.78 5476.0 5479.62 5479.93 148.82 67.5
median 2387.34 3088.0 4099.11 4653.13 5406.38 5883.42 5779.65 5884.4 5790.33 5803.31 5910.62 5910.02 5933.2 5918.53 172.65 79.48
first quartile 2303.43 2845.56 3960.7 4471.64 5048.48 5671.6 5487.56 5269.34 5058.4 4661.34 4676.27 4680.42 4654.04 4652.52 109.65 49.38
third quartile 2409.29 3241.68 4173.85 4931.32 5556.8 5970.47 5978.75 6083.97 6168.2 5885.76 5939.13 5975.2 5984.66 6003.39 235.56 108.22
minimum 1693.37 2597.98 3568.94 4195.93 4924.01 5276.5 4656.71 4436.77 4628.58 4649.23 4631.33 4656.95 4635.65 4630.08 61.83 27.11
maximum 2409.29 4039.02 4706.23 5435.77 5810.85 6916.7 6307.68 6235.95 6252.1 6294.27 6364.98 6379.56 6425.87 6455.03 287.62 117.74
qcow2 lvm2 difference 10.93 % 3.77 % 6.65 % 0.46 % -0.52 % 2.07 % -0.9 % 1.54 % -0.16 % -0.29 % 0.42 % -0.59 % -0.48 % -0.57 % 6.77 % 6.15 %
ttest p-value 0.8137 0.3661 0.0782 0.5434 0.9524 0.3705 0.9329 0.9624 0.9808 0.9763 0.9779 0.9886 0.9948 0.9892 0.586 0.5852
ttest equality SAME SAME DIFF SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
bkwdrd_BS
Backwards read Block size [kB] 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384
qcow2mean val. 4080.37 4927.91 4831.93 4837.67 4754.4 4746.52 4709.9 4886.47 4888.38 4156.13 3751.01 3667.66 3557.58
standard dev. 1241.7 1609.97 1408.17 1554.37 2208.67 2199.62 2115.04 2150.7 2232.83 1967.65 1869.06 1955.7 2044.35
ci. min. 90% 3310.7 3929.97 3959.08 3874.2 3786.42 3746.2 3708.84 3823.34 3730.82 3080.85 2667.55 2455.42 2188.2
ci. max 90% 4850.04 5925.85 5704.79 5801.15 5722.38 5746.84 5710.95 5949.6 6045.94 5231.41 4834.47 4879.91 4926.96
geom. mean 3881.1 4622.49 4615.87 4570.16 2860.04 2924.11 2911.85 3017.57 3012.72 2709.83 2449.5 2321.82 2184.25
median 4406.68 5498.52 5205.11 5079.04 5716.55 5926.66 5757.28 5831.89 5821.45 5030.69 4632.46 4642.98 4650.76
first quartile 3085.81 3843.67 3843.67 4099.11 3904.26 3988.41 4856.15 5527.51 5711.47 4877.33 4589.54 4596.56 3568.96
third quartile 5298.01 6125.42 6105.68 6192.22 6382.6 6193.46 5921.42 5950.18 5939.94 5109.0 4646.6 4653.57 4669.14
minimum 1944.61 2004.07 2387.34 2152.15 26.71 41.52 47.59 61.58 74.88 109.38 128.45 138.34 145.14
maximum 5312.93 6370.42 6183.09 6370.42 6450.47 6303.24 5962.09 5992.77 6003.68 5134.58 4686.76 4716.8 4681.19
lvm2mean val. 4357.59 4807.01 4754.53 4870.08 4837.26 4959.49 4777.97 4930.07 4902.33 4225.36 3727.25 3652.81 3545.55
standard dev. 1332.32 1581.15 1382.86 1422.93 2249.75 2124.63 2079.45 2158.35 2234.59 2016.63 1875.19 1970.59 2063.8
ci. min. 90% 3531.76 3826.94 3897.36 3988.08 3851.28 3993.28 3793.76 3863.16 3743.85 3123.32 2640.23 2431.35 2163.14
ci. max 90% 5183.43 5787.08 5611.69 5752.09 5823.24 5925.71 5762.17 5996.98 6060.8 5327.41 4814.26 4874.28 4927.95
geom. mean 4103.53 4538.17 4540.68 4648.74 2895.57 3045.13 2978.76 2999.97 3051.12 2655.47 2355.16 2216.02 2077.28
median 4970.7 5556.8 4924.01 5048.48 6047.34 5983.52 5795.25 5885.76 5841.67 5123.71 4632.4 4642.73 4653.28
first quartile 4099.11 3568.94 4020.53 4099.11 4006.64 4543.1 4784.18 5435.77 5730.1 5048.45 4484.72 4548.02 3550.29
third quartile 5292.58 6211.93 5779.65 6125.52 6368.63 6257.98 5903.37 5939.13 5934.1 5136.85 4645.84 4666.75 4665.07
minimum 1693.37 2409.29 2303.43 2409.29 27.11 38.79 49.38 53.47 79.48 90.97 108.22 113.69 117.74
maximum 5303.18 6249.77 6220.92 6307.68 6916.7 6344.55 5933.2 5984.66 6003.39 5276.5 4656.95 4693.65 4676.99
qcow2 lvm2 difference 12.8 % 1.06 % -5.4 % -0.6 % 5.79 % 0.96 % 0.66 % 0.92 % 0.35 % 1.85 % -0.0 % -0.01 % 0.05 %
ttest p-value 0.6541 0.8743 0.9078 0.9638 0.917 0.7894 0.9322 0.9593 0.9879 0.9359 0.9777 0.9874 0.9908
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
bkwdrd\_compare
Regression line
slope 1.00965
std. error 0.00934
ci. max 90% 0.99419
ci. min. 90% 1.02511
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Record rewrite

recrewr_FS
Record rewrite File size [kB] 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152
qcow2mean val. 1862.67 2766.46 3277.65 3983.68 4485.89 4741.58 4772.82 4756.82 4651.35 4479.67 4506.05 4506.83 4509.7 4498.48 4533.53 4485.06
standard dev. 90.76 568.04 777.9 605.13 346.41 611.44 857.07 1058.17 1115.38 1235.69 1239.86 1257.37 1268.65 1293.77 1260.22 1212.51
ci. min. 90% 1776.15 2299.17 2706.32 3578.34 4271.17 4387.13 4304.45 4208.24 4100.0 3713.73 3737.52 3727.45 3723.33 3696.54 3752.38 3733.48
ci. max 90% 1949.2 3233.76 3848.97 4389.01 4700.61 5096.02 5241.19 5305.41 5202.71 5245.61 5274.58 5286.21 5296.08 5300.43 5314.68 5236.63
geom. mean 1860.89 2715.2 3207.6 3944.64 4473.4 4700.67 4691.06 4630.91 4511.42 4319.24 4345.02 4342.32 4341.05 4323.47 4368.07 4330.47
median 1835.67 2740.56 2972.11 3835.33 4605.05 4945.23 4968.37 5151.58 5225.4 5090.6 5234.31 5176.91 5224.39 5209.18 5245.79 5243.07
first quartile 1835.67 2498.92 2828.34 3773.32 4425.28 4680.59 4556.35 4181.16 3603.58 3064.83 3081.22 3085.31 3074.3 3059.2 3091.56 3103.25
third quartile 1944.61 3160.8 3504.85 4076.56 4740.37 5126.31 5366.82 5405.69 5487.32 5382.75 5441.32 5412.23 5482.62 5403.7 5440.56 5361.03
minimum 1738.29 1921.84 2577.58 3084.93 3817.15 3301.55 2943.47 2894.17 2928.75 3046.75 3073.81 3059.79 3038.47 3020.72 3064.61 3069.63
maximum 1959.14 3476.58 4727.45 5043.59 4878.2 5347.13 5664.52 5926.45 5807.87 5878.03 5875.3 6011.94 5960.57 5974.05 5951.62 5811.49
lvm2mean val. 1934.02 2459.39 3143.81 4076.02 4399.36 4711.81 4752.76 4727.77 4733.91 4477.99 4495.7 4501.21 4494.05 4470.31 4488.65 4501.76
standard dev. 185.64 126.86 457.74 566.62 381.5 721.52 828.54 1038.21 1189.57 1242.46 1262.53 1268.66 1286.16 1284.84 1241.11 1224.99
ci. min. 90% 1757.03 2355.03 2807.62 3696.48 4162.89 4293.56 4299.98 4189.53 4145.88 3707.85 3713.12 3714.83 3696.83 3673.9 3719.35 3742.45
ci. max 90% 2111.0 2563.76 3480.0 4455.56 4635.84 5130.07 5205.53 5266.0 5321.93 5248.13 5278.28 5287.59 5291.28 5266.72 5257.96 5261.07
geom. mean 1926.63 2456.71 3115.72 4037.65 4383.69 4656.73 4675.41 4608.01 4577.29 4315.9 4328.57 4333.19 4321.14 4297.16 4327.76 4345.7
median 1959.14 2429.65 2906.21 4220.62 4444.03 4887.52 4999.46 5194.88 5172.64 5184.59 5245.46 5213.82 5171.0 5171.35 5165.19 5156.26
first quartile 1888.57 2374.58 2783.12 3948.93 4329.35 4402.75 4566.38 3899.81 3650.43 3090.59 3083.59 3093.88 3080.96 3068.92 3119.85 3125.72
third quartile 2019.51 2523.66 3594.92 4383.31 4564.95 5199.97 5164.91 5417.24 5646.13 5416.42 5443.63 5517.24 5458.06 5386.92 5454.29 5335.14
minimum 1650.72 2321.85 2662.67 2942.11 3546.06 3257.96 2934.72 2982.93 2922.88 3040.67 3037.36 3032.32 3010.13 3010.88 3052.53 3089.16
maximum 2152.15 2663.99 3681.72 4714.76 5000.33 5589.4 5587.18 5830.68 6067.82 5959.19 5915.96 5910.34 6006.42 5947.33 5872.4 5924.47
qcow2 lvm2 difference 6.73 % -11.34 % -2.22 % 10.05 % -3.5 % -1.17 % 0.63 % 0.84 % -1.01 % 1.85 % 0.21 % 0.71 % -1.02 % -0.73 % -1.54 % -1.66 %
ttest p-value 0.4623 0.2253 0.7017 0.7574 0.6213 0.9218 0.956 0.9465 0.8567 0.9977 0.9862 0.9926 0.9796 0.9636 0.9403 0.9772
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
recrewr_BS
Record rewrite Block size [kB] 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384
qcow2mean val. 3525.69 4303.61 4037.76 4334.81 5060.7 5098.58 5059.54 5010.84 5077.88 3624.66 3033.59 3043.98 3057.45
standard dev. 906.59 1273.26 1256.58 1322.25 1319.97 1273.62 651.11 418.7 272.73 119.41 47.01 62.59 54.63
ci. min. 90% 2963.74 3514.38 3258.87 3515.21 4482.21 4519.38 4751.37 4803.87 4936.49 3559.4 3006.35 3005.18 3020.85
ci. max 90% 4087.64 5092.84 4816.65 5154.41 5639.2 5677.78 5367.71 5217.81 5219.26 3689.91 3060.84 3082.77 3094.04
geom. mean 3397.29 4094.17 3829.88 4108.97 4828.59 4883.54 5008.73 4992.5 5070.79 3622.79 3033.26 3043.39 3057.01
median 3817.15 5035.77 4630.47 4605.05 5778.31 5780.36 5299.13 5221.52 5193.05 3669.57 3049.13 3058.97 3075.69
first quartile 3084.93 3220.33 3049.91 3732.88 4557.92 4954.78 4965.75 4920.28 5070.26 3598.83 3025.71 3027.45 3056.09
third quartile 4192.41 5209.01 4968.37 5533.74 5896.42 5844.18 5410.1 5245.79 5237.23 3695.21 3064.78 3078.32 3085.88
minimum 1738.29 1959.14 1944.61 1835.67 1835.67 1921.84 2972.11 3786.8 4425.28 3301.55 2943.47 2894.17 2928.75
maximum 4373.73 5487.32 5234.86 5639.97 6011.94 5926.45 5482.62 5319.69 5338.14 3728.73 3081.22 3103.25 3100.58
lvm2mean val. 3338.11 4161.12 4215.45 4214.57 4997.19 5231.59 5074.03 4974.93 5008.26 3576.23 3035.15 3045.19 3059.55
standard dev. 898.98 1399.43 1214.12 1467.33 1292.53 1198.1 591.02 496.97 309.02 117.15 47.5 46.99 62.82
ci. min. 90% 2780.88 3293.69 3462.88 3305.05 4430.72 4686.73 4794.3 4729.26 4848.05 3512.21 3007.62 3016.07 3017.47
ci. max 90% 3895.34 5028.56 4968.02 5124.1 5563.65 5776.45 5353.76 5220.59 5168.46 3640.26 3062.69 3074.32 3101.64
geom. mean 3210.91 3915.86 4028.09 3939.28 4778.23 5050.51 5037.84 4948.5 4998.93 3574.41 3034.82 3044.87 3058.98
median 3546.06 4569.93 4684.26 4462.95 5769.6 5830.68 5361.03 5194.02 5160.73 3613.85 3031.59 3044.74 3074.94
first quartile 2753.57 2812.66 3521.01 2906.21 4549.26 5293.75 5136.72 4999.46 4997.84 3586.89 3012.34 3028.73 3039.84
third quartile 4001.81 5223.92 5167.3 5442.9 5885.23 5876.85 5436.84 5259.14 5174.66 3635.52 3075.83 3080.03 3098.39
minimum 1650.72 2019.51 2152.15 1888.57 1959.14 2321.85 3668.84 3598.37 4308.91 3257.96 2934.72 2979.6 2922.88
maximum 4387.12 5734.92 5517.55 5646.13 5959.19 6067.82 5517.24 5294.94 5245.46 3676.87 3090.59 3125.72 3119.85
qcow2 lvm2 difference -7.1 % -9.25 % 1.16 % -3.09 % -0.15 % 0.87 % 1.17 % -0.53 % -0.62 % -1.52 % -0.58 % -0.47 % -0.02 %
ttest p-value 0.6653 0.8241 0.7642 0.8574 0.8915 0.7705 0.9513 0.8437 0.5644 0.3485 0.942 0.9634 0.9439
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
recrewr\_compare
Regression line
slope 0.9963
std. error 0.01392
ci. max 90% 0.97325
ci. min. 90% 1.01934
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Strided Read

striderd_FS
Strided Read File size [kB] 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152
qcow2mean val. 2861.76 4296.33 4601.13 5241.05 6776.55 7233.98 6659.59 6175.99 5848.27 5584.56 5471.39 5459.04 5467.69 5470.13 171.63 75.63
standard dev. 387.25 1590.74 634.0 610.59 729.42 1322.04 1332.84 1337.11 1095.22 764.32 718.64 724.0 726.57 714.68 116.57 47.93
ci. min. 90% 2492.56 2987.73 4135.49 4832.06 6324.42 6467.61 5931.23 5482.79 5306.88 5110.8 5025.94 5010.27 5017.33 5027.14 99.37 45.92
ci. max 90% 3230.96 5604.94 5066.78 5650.04 7228.68 8000.34 7387.96 6869.18 6389.66 6058.32 5916.84 5907.81 5918.06 5913.12 243.88 105.34
geom. mean 2840.32 4102.35 4561.8 5206.88 6741.29 7114.4 6540.44 6049.43 5762.58 5535.35 5428.35 5415.14 5423.55 5427.47 132.47 61.96
median 2985.5 3805.16 4727.45 5325.35 6659.68 7299.25 6526.05 6131.36 5983.42 5932.59 5870.42 5880.18 5893.18 5890.94 148.92 63.97
first quartile 2501.24 3500.26 4197.83 5162.58 6215.57 7124.17 5877.18 5536.1 4995.52 4616.92 4651.15 4599.85 4608.79 4625.2 67.39 33.88
third quartile 3128.0 4237.98 5107.42 5701.92 7573.6 7702.85 7281.47 6413.42 6142.23 6072.15 5976.28 5992.75 5980.49 6008.9 251.64 114.76
minimum 2409.29 2982.2 3568.94 4003.68 5677.14 4807.76 4722.24 4203.86 4589.64 4541.01 4574.03 4592.57 4592.35 4615.85 37.13 25.76
maximum 3284.78 7404.6 5301.04 5812.41 7642.6 9012.2 9069.72 8668.59 8772.62 6412.75 6335.39 6262.51 6302.94 6262.22 347.49 147.98
lvm2mean val. 2849.17 3988.74 4998.68 5783.32 6614.43 7096.07 6711.37 6152.7 5845.92 5593.83 5459.55 5458.71 5473.85 5474.35 148.58 66.67
standard dev. 476.76 785.43 449.62 405.95 724.84 958.93 1415.51 1226.17 1075.03 729.25 709.46 721.03 727.23 722.42 90.57 37.12
ci. min. 90% 2394.63 3342.62 4668.46 5511.4 6165.14 6540.2 5937.83 5517.02 5314.52 5141.81 5019.79 5011.78 5023.08 5026.57 92.45 43.66
ci. max 90% 3303.71 4634.86 5328.91 6055.25 7063.72 7651.95 7484.91 6788.38 6377.33 6045.86 5899.31 5905.65 5924.63 5922.14 204.72 89.67
geom. mean 2816.2 3921.08 4981.35 5770.9 6578.89 7032.4 6581.23 6048.14 5763.66 5549.26 5417.43 5415.26 5429.68 5430.8 120.93 57.05
median 2985.5 4171.66 5119.86 5748.68 6712.97 7207.93 6367.53 5997.38 5882.2 5930.23 5864.65 5884.24 5885.2 5877.16 145.47 59.39
first quartile 2387.34 3425.0 4678.69 5408.17 6098.09 6876.39 5843.45 5648.48 5007.82 4657.94 4635.65 4636.48 4612.44 4634.9 62.67 36.41
third quartile 3284.78 4413.91 5208.91 6171.62 7087.3 7766.93 7441.21 6330.51 6158.58 5988.17 5984.14 5943.25 5990.83 5998.68 210.17 98.26
minimum 2303.43 2915.86 4390.92 5325.35 5406.38 5233.7 4739.59 4597.88 4637.85 4634.46 4587.17 4577.46 4601.48 4602.2 37.64 24.75
maximum 3284.78 5002.48 5704.81 6339.53 7886.91 8266.22 9501.17 8695.55 8723.59 6350.55 6226.35 6231.47 6273.58 6252.83 287.92 119.66
qcow2 lvm2 difference 0.0 % 9.63 % 8.3 % 7.95 % 0.8 % -1.25 % -2.43 % -2.19 % -1.69 % -0.04 % -0.1 % 0.07 % -0.14 % -0.23 % -2.32 % -7.16 %
ttest p-value 0.9646 0.68 0.2009 0.0552 0.6426 0.7925 0.9305 0.9649 0.9956 0.9793 0.9724 0.9993 0.9859 0.9902 0.6459 0.6633
ttest equality SAME SAME SAME DIFF SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
striderd_BS
Strided Read Block size [kB] 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384
qcow2mean val. 4436.27 5955.89 5478.58 5666.55 5190.13 5353.47 5414.52 5574.69 5714.09 4395.9 3681.21 3646.01 3530.39
standard dev. 1059.54 1465.65 1320.35 1479.6 2407.28 2458.76 2615.91 2647.73 2823.93 2127.98 1848.73 1939.23 2026.99
ci. min. 90% 3779.51 5047.41 4660.16 4749.42 4135.1 4235.31 4176.41 4265.87 4250.09 3233.0 2609.53 2443.98 2172.64
ci. max 90% 5093.02 6864.37 6296.99 6583.68 6245.15 6471.64 6652.63 6883.51 7178.09 5558.8 4752.88 4848.05 4888.14
geom. mean 4314.5 5769.4 5318.04 5437.9 2974.7 3123.17 3053.59 3190.55 3332.51 2745.06 2359.0 2320.34 2176.17
median 4995.52 6061.34 6142.23 6185.26 6279.89 6144.84 5875.3 5941.36 6000.82 5113.85 4581.84 4605.04 4605.12
first quartile 3568.94 5325.35 4714.76 5301.04 4714.06 5269.93 5451.23 5925.87 5972.8 4959.05 4288.15 4593.73 3531.14
third quartile 5276.18 7245.26 6215.57 6536.22 6398.68 6224.3 5898.09 6484.64 7307.1 5511.25 4600.26 4625.2 4625.48
minimum 2982.2 3284.78 3128.0 2501.24 25.76 33.88 29.49 39.75 63.97 89.04 114.76 136.04 147.98
maximum 5677.14 7573.6 7220.32 7353.23 7642.6 9012.2 9069.72 8668.59 8772.62 6072.15 4722.24 4689.78 4676.96
lvm2mean val. 4708.3 5598.77 5334.61 5668.8 5229.73 5413.02 5536.82 5615.25 5673.13 4461.06 3738.18 3635.58 3528.82
standard dev. 1050.12 1141.39 1574.06 1293.11 2390.47 2289.76 2632.05 2660.2 2786.83 2163.96 1889.68 1958.17 2052.82
ci. min. 90% 4057.38 4891.28 4358.93 4867.26 4182.07 4371.71 4291.07 4300.27 4228.36 3278.5 2642.77 2421.81 2153.77
ci. max 90% 5359.21 6306.26 6310.29 6470.34 6277.38 6454.33 6782.57 6930.23 7117.9 5643.62 4833.59 4849.36 4903.87
geom. mean 4583.46 5475.54 5069.23 5515.73 2995.77 3219.05 3091.64 3210.36 3288.97 2716.33 2313.42 2213.72 2074.15
median 5098.83 6083.32 5843.78 6240.59 6242.15 6193.17 5883.22 5956.83 5994.75 5127.59 4606.16 4609.71 4635.27
first quartile 4543.11 5002.48 5221.84 5119.86 4686.78 5768.25 5460.17 5905.16 5972.82 5096.06 4589.84 4577.46 3523.09
third quartile 5406.38 6339.53 6052.81 6349.11 6412.98 6250.78 5935.68 6454.7 7318.47 5658.04 4629.31 4634.46 4641.49
minimum 2915.86 3284.78 2387.34 3284.78 24.75 36.41 27.5 40.49 59.39 81.69 98.26 111.87 119.66
maximum 5746.39 6804.48 7195.54 7220.32 7783.04 7718.59 9501.17 8695.55 8723.59 5930.23 4739.59 4672.79 4657.94
qcow2 lvm2 difference 2.07 % 0.36 % -4.86 % 0.89 % -0.6 % 0.79 % 0.13 % 0.26 % -0.1 % 0.27 % 0.53 % 0.1 % 0.65 %
ttest p-value 0.5919 0.5721 0.8361 0.9973 0.9631 0.9458 0.9028 0.9692 0.9718 0.9439 0.9464 0.9911 0.9988
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
striderd\_compare
Regression line
slope 1.00032
std. error 0.01092
ci. max 90% 0.98225
ci. min. 90% 1.0184
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Fwrite

fwrite_FS
Fwrite File size [kB] 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152
qcow2mean val. 1424.25 2132.06 2394.6 3035.19 3482.0 3392.67 3122.6 2996.52 2974.85 2809.58 2864.77 2449.76 288.66 163.61 135.4 129.55
standard dev. 343.84 660.75 280.26 571.08 648.56 519.81 480.57 341.1 294.22 460.59 368.45 343.42 19.97 15.25 10.77 1.65
ci. min. 90% 1096.43 1588.5 2188.76 2652.67 3079.99 3091.35 2859.98 2819.68 2829.41 2524.08 2636.38 2236.89 276.29 154.16 128.73 128.52
ci. max 90% 1752.07 2675.61 2600.44 3417.72 3884.01 3693.99 3385.22 3173.35 3120.29 3095.08 3093.16 2662.63 301.04 173.06 142.08 130.57
geom. mean 1391.34 2052.61 2380.79 2981.33 3419.28 3350.4 3081.1 2975.66 2960.61 2771.76 2842.96 2427.74 288.04 162.95 134.98 129.54
median 1331.99 2083.1 2357.38 3059.4 3610.16 3543.38 3262.9 3090.83 3046.41 2904.34 2884.7 2554.07 287.93 172.56 139.44 129.86
first quartile 1155.81 1815.35 2198.52 2890.5 3345.26 3258.45 3036.57 2935.02 2798.21 2501.78 2515.05 2140.25 284.04 150.15 136.25 129.49
third quartile 1785.65 2221.22 2545.51 3385.67 3862.85 3702.95 3372.84 3205.64 3174.53 3152.74 3147.15 2651.15 293.72 173.53 141.08 130.22
minimum 1062.15 1331.34 2081.31 1901.65 2108.96 2185.78 1883.22 2069.75 2343.61 1879.25 2343.48 1940.92 249.21 138.06 108.32 126.68
maximum 1785.65 3301.44 2835.48 3786.8 4383.65 3905.66 3643.41 3329.21 3333.47 3256.94 3286.76 2928.25 325.47 178.6 143.08 132.07
lvm2mean val. 1337.63 2549.94 2548.58 3205.64 3437.86 3473.41 3141.97 3031.68 2980.14 2818.04 2866.25 2445.52 263.74 135.8 103.78 99.1
standard dev. 332.25 593.3 655.48 692.31 681.48 557.84 476.14 331.16 289.51 460.09 360.98 337.17 13.57 5.41 3.92 2.08
ci. min. 90% 1020.87 2061.87 2067.16 2741.91 3015.44 3150.04 2881.76 2860.0 2837.03 2532.86 2642.5 2236.53 255.33 132.45 101.35 97.81
ci. max 90% 1654.4 3038.01 3030.0 3669.38 3860.27 3796.79 3402.17 3203.36 3123.25 3103.23 3090.0 2654.51 272.15 139.15 106.21 100.39
geom. mean 1305.65 2493.49 2482.08 3138.02 3368.28 3423.86 3101.72 3012.72 2966.3 2780.54 2845.33 2424.57 263.44 135.7 103.71 99.08
median 1273.74 2557.69 2336.37 3136.37 3663.77 3737.78 3327.62 3192.85 3106.2 2928.04 2889.64 2503.67 258.14 134.85 104.55 98.31
first quartile 1181.86 2106.73 2192.36 2838.03 3236.83 3335.52 3061.12 2907.43 2820.43 2500.76 2530.15 2142.87 256.13 131.33 103.23 97.93
third quartile 1449.87 2807.54 2779.51 3577.61 3848.67 3796.08 3403.26 3236.95 3165.84 3151.18 3133.12 2606.67 271.71 138.49 105.5 100.3
minimum 947.03 1860.46 1771.82 2074.73 2058.25 2114.17 1919.41 2172.12 2351.58 1896.3 2365.99 1965.39 248.15 129.61 94.54 96.38
maximum 1835.67 3476.58 3788.13 4343.68 4329.35 3944.23 3642.62 3294.88 3273.31 3262.32 3264.81 2967.44 293.16 146.37 108.66 102.74
qcow2 lvm2 difference -4.37 % 22.78 % -0.89 % 2.52 % 1.48 % 5.49 % 1.98 % 3.3 % 1.96 % 0.82 % 0.17 % -1.97 % -10.35 % -21.85 % -25.03 % -24.3 %
ttest p-value 0.696 0.2759 0.5782 0.5996 0.8898 0.7416 0.9253 0.8002 0.9635 0.9694 0.9932 0.9793 0.0069 0.0001 0.0 0.0
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME DIFF DIFF DIFF DIFF
fwrite_BS
Fwrite Block size [kB] 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384
qcow2mean val. 2419.63 2820.05 2803.65 2888.06 2268.88 2415.9 2270.5 2221.27 2116.71 1640.11 1547.75 1490.65 1356.51
standard dev. 563.57 625.32 777.39 859.83 1399.43 1439.99 1451.48 1497.82 1526.92 1217.71 1201.19 1266.42 1285.02
ci. min. 90% 2070.3 2432.45 2321.79 2355.09 1655.56 1761.04 1583.52 1480.87 1325.12 974.66 851.44 705.66 495.76
ci. max 90% 2768.96 3207.66 3285.51 3421.02 2882.2 3070.77 2957.49 2961.67 2908.31 2305.56 2244.06 2275.65 2217.27
geom. mean 2349.22 2750.19 2673.98 2728.39 1401.4 1471.78 1322.29 1235.48 1165.08 916.14 845.72 767.52 668.02
median 2666.69 3066.35 3051.01 3203.65 2951.41 3250.38 2989.39 3089.1 2719.39 1940.92 2105.0 2045.22 1102.36
first quartile 2081.31 2315.73 2357.38 2428.35 1068.17 1184.62 694.37 249.21 256.56 236.16 201.28 168.57 165.54
third quartile 2753.16 3217.84 3260.37 3387.42 3339.23 3371.06 3151.34 3211.62 3030.22 2531.02 2472.51 2515.05 2530.1
minimum 1331.99 1785.65 1155.81 1062.15 127.24 129.69 126.68 130.17 129.86 108.32 129.49 130.22 130.54
maximum 2958.31 3496.99 3616.08 3877.13 3731.91 3719.0 3862.85 3905.66 4383.65 3178.94 2855.3 2940.07 2913.37
lvm2mean val. 2527.53 2733.36 3051.37 3119.15 2324.18 2312.74 2290.2 2265.77 2102.7 1661.23 1564.76 1469.66 1345.3
standard dev. 533.88 653.91 831.44 884.03 1403.11 1444.8 1476.43 1571.5 1538.44 1272.66 1243.76 1272.27 1305.23
ci. min. 90% 2196.61 2328.04 2536.01 2571.18 1709.25 1655.69 1591.41 1488.95 1305.12 965.75 843.78 681.04 471.02
ci. max 90% 2858.46 3138.69 3566.74 3667.11 2939.11 2969.79 2989.0 3042.59 2900.27 2356.71 2285.75 2258.28 2219.59
geom. mean 2459.99 2648.32 2905.61 2929.13 1383.21 1327.35 1258.75 1200.29 1080.66 863.54 787.1 693.85 605.27
median 2710.02 3103.55 3236.83 3246.08 3075.35 3238.59 2972.89 3088.25 2729.83 1965.39 2157.49 2057.84 1094.73
first quartile 2685.88 2336.37 3152.75 3089.47 1441.2 1009.99 709.5 258.14 230.73 195.35 171.8 138.2 136.94
third quartile 2778.4 3145.69 3476.58 3751.94 3272.61 3310.09 3224.4 3214.08 3024.98 2512.59 2470.47 2530.15 2521.76
minimum 1273.74 1449.87 1181.86 947.03 101.49 99.42 94.54 102.74 97.93 98.31 98.24 97.09 100.3
maximum 3007.96 3300.51 3837.76 3848.67 3796.08 3732.23 3953.88 4343.68 4329.35 3472.38 3018.68 2847.23 2943.4
qcow2 lvm2 difference 1.62 % 1.21 % 6.09 % 1.32 % 4.2 % -0.36 % -0.55 % -0.03 % 0.38 % 1.26 % 2.49 % 0.62 % -0.69 %
ttest p-value 0.6822 0.7775 0.5231 0.5818 0.9119 0.8461 0.9719 0.9417 0.9823 0.9687 0.9755 0.9724 0.9864
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
fwrite\_compare
Regression line
slope 1.01864
std. error 0.01074
ci. max 90% 1.00086
ci. min. 90% 1.03641
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Frewrite

frewrite_FS
Frewrite File size [kB] 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152
qcow2mean val. 1639.32 2250.32 2559.63 3241.73 3561.51 3553.61 3283.85 3159.85 3082.53 3030.39 2863.81 2522.12 288.89 164.8 137.02 128.38
standard dev. 228.21 450.09 460.13 697.94 713.52 589.59 276.4 243.73 308.03 419.0 355.06 305.09 19.97 13.51 2.65 1.85
ci. min. 90% 1421.75 1880.06 2221.68 2774.23 3119.24 3211.84 3132.81 3033.49 2930.27 2770.67 2643.72 2333.01 276.51 156.42 135.38 127.23
ci. max 90% 1856.9 2620.58 2897.57 3709.24 4003.78 3895.39 3434.9 3286.2 3234.8 3290.1 3083.89 2711.24 301.26 173.17 138.66 129.53
geom. mean 1626.67 2212.31 2524.86 3177.83 3500.83 3514.42 3273.36 3151.23 3068.4 3004.9 2843.55 2505.73 288.26 164.29 137.0 128.37
median 1693.37 2209.58 2546.29 3119.51 3449.81 3454.83 3276.28 3176.54 3108.65 3117.08 2881.7 2521.52 292.14 166.81 136.24 127.76
first quartile 1491.1 1987.95 2245.18 2764.56 3207.13 3282.36 3236.47 3027.06 2929.26 2869.44 2548.98 2257.54 275.38 158.56 135.49 126.81
third quartile 1693.37 2556.21 2790.92 3675.46 3845.14 3598.5 3356.18 3284.0 3228.44 3235.89 3148.85 2785.15 307.25 176.72 140.04 129.31
minimum 1359.63 1644.54 1968.03 2359.52 2474.8 2804.8 2794.9 2708.23 2575.19 2444.82 2369.83 2146.28 256.3 138.96 133.19 126.02
maximum 1959.14 2852.4 3330.87 4426.19 5048.48 5002.73 3880.2 3669.63 3755.01 3821.82 3267.95 2939.62 309.81 179.09 140.56 131.31
lvm2mean val. 1783.16 2207.96 2768.27 3429.16 3689.56 3584.44 3359.25 3187.47 3093.82 3034.42 2877.07 2558.66 258.94 138.56 108.05 100.34
standard dev. 376.24 588.98 520.97 730.59 727.19 583.74 395.46 270.98 304.11 421.24 359.7 322.4 12.82 2.68 5.67 1.75
ci. min. 90% 1424.46 1723.44 2385.64 2939.79 3238.81 3246.05 3143.14 3046.98 2943.49 2773.32 2654.11 2358.82 250.99 136.9 104.53 99.26
ci. max 90% 2141.86 2692.48 3150.89 3918.54 4140.31 3922.82 3575.36 3327.95 3244.15 3295.53 3100.03 2758.49 266.89 140.22 111.56 101.43
geom. mean 1750.59 2148.16 2724.74 3365.7 3632.0 3546.68 3338.69 3176.75 3080.12 3008.48 2856.43 2540.31 258.66 138.54 107.91 100.33
median 1835.67 2001.97 2782.8 3375.63 3507.51 3484.66 3350.21 3195.9 3161.96 3099.87 2889.92 2572.86 255.84 138.32 107.34 100.64
first quartile 1491.1 1861.1 2448.1 2943.33 3300.51 3328.84 3186.13 3079.6 2928.24 2856.86 2536.15 2264.0 253.12 136.64 103.34 98.91
third quartile 2019.51 2469.02 3118.54 3643.6 3999.12 3629.24 3466.36 3360.05 3266.62 3254.96 3149.92 2799.51 259.85 139.19 113.38 101.61
minimum 1325.26 1604.28 2032.89 2592.9 2747.11 2836.09 2677.58 2637.55 2597.41 2421.31 2384.4 2149.96 243.28 135.38 100.83 97.94
maximum 2244.27 3200.67 3428.9 4856.7 5317.28 5050.93 4264.88 3726.28 3755.85 3812.7 3285.59 2945.17 286.36 144.24 115.59 102.88
qcow2 lvm2 difference 8.4 % -9.4 % 9.29 % 8.21 % 1.67 % 0.86 % 2.26 % 0.61 % 1.72 % -0.55 % 0.29 % 2.04 % -12.43 % -17.08 % -21.21 % -21.23 %
ttest p-value 0.4857 0.8914 0.4425 0.608 0.7111 0.9078 0.61 0.7954 0.9259 0.984 0.9382 0.8081 0.0016 0.0 0.0 0.0
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME DIFF DIFF DIFF DIFF
frewrite_BS
Frewrite Block size [kB] 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384
qcow2mean val. 2305.98 2775.87 2769.33 2887.33 2345.39 2413.54 2414.09 2464.35 2298.55 1876.41 1715.75 1675.54 1600.18
standard dev. 529.09 604.25 615.24 526.54 1362.93 1444.69 1538.41 1679.93 1686.78 1431.08 1389.75 1467.03 1558.0
ci. min. 90% 1978.02 2401.33 2387.97 2560.96 1748.06 1756.54 1685.95 1633.93 1424.08 1094.36 910.14 766.2 556.58
ci. max 90% 2633.94 3150.42 3150.69 3213.7 2942.71 3070.54 3142.22 3294.77 3173.03 2658.46 2521.36 2584.87 2643.78
geom. mean 2243.49 2702.6 2698.41 2839.99 1470.98 1453.11 1382.56 1352.17 1235.75 1015.44 880.61 823.8 726.87
median 2474.8 3108.65 3115.19 3207.13 3073.61 3233.78 3132.96 3107.35 2871.82 2369.83 2260.96 2257.54 1360.11
first quartile 1968.03 2576.97 2336.37 2546.29 1347.48 1224.44 836.91 292.14 262.53 237.62 186.12 171.43 167.64
third quartile 2708.23 3167.06 3183.41 3284.24 3300.03 3314.88 3270.24 3401.15 3154.66 2768.53 2745.64 2869.44 2893.59
minimum 1359.63 1491.1 1693.37 1959.14 126.75 127.6 126.81 127.76 129.11 129.31 126.02 130.78 131.31
maximum 2804.8 3246.61 3279.86 3389.6 3616.08 3906.72 4426.19 5048.48 5002.73 3880.2 3669.63 3755.01 3821.82
lvm2mean val. 2347.35 2702.69 2826.57 3014.2 2443.37 2493.95 2483.68 2479.43 2313.58 1905.18 1722.45 1662.49 1587.39
standard dev. 553.81 669.46 589.12 571.69 1413.05 1478.84 1621.46 1726.03 1723.02 1510.57 1416.09 1483.94 1572.38
ci. min. 90% 2004.07 2287.72 2461.41 2659.83 1824.08 1821.42 1716.24 1626.22 1420.32 1079.69 901.57 742.67 534.16
ci. max 90% 2690.63 3117.65 3191.74 3368.56 3062.65 3166.48 3251.12 3332.63 3206.84 2730.67 2543.33 2582.31 2640.63
geom. mean 2277.39 2614.02 2763.78 2957.91 1452.15 1426.64 1347.17 1293.49 1155.73 946.04 830.98 753.12 661.29
median 2637.55 3041.31 3163.18 3266.62 3282.48 3262.67 3149.77 3111.65 2896.78 2384.4 2273.25 2264.0 1355.25
first quartile 2032.89 2213.09 2683.11 2906.21 1746.48 1589.98 878.16 253.5 222.78 195.92 167.7 140.26 137.08
third quartile 2677.58 3172.21 3208.37 3368.65 3410.16 3349.76 3307.33 3493.21 3260.9 2794.03 2750.79 2856.86 2899.5
minimum 1325.26 1491.1 1835.67 2019.51 101.61 98.91 100.64 102.88 98.42 102.4 100.65 99.66 97.94
maximum 2836.09 3226.87 3395.09 3491.17 3622.63 3943.46 4856.7 5317.28 5050.93 4264.88 3726.28 3755.85 3812.7
qcow2 lvm2 difference 6.58 % -2.17 % 1.54 % 1.85 % 6.8 % 0.89 % 0.54 % 0.14 % 0.87 % 0.61 % 0.54 % 0.29 % -0.36 %
ttest p-value 0.8733 0.8107 0.8428 0.631 0.8431 0.8813 0.9082 0.9822 0.983 0.9639 0.9916 0.9853 0.9872
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
frewrite\_compare
Regression line
slope 1.02127
std. error 0.00769
ci. max 90% 1.00855
ci. min. 90% 1.034
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Fread

fread_FS
Fread File size [kB] 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152
qcow2mean val. 2649.64 3190.9 4105.55 4753.95 5356.82 5953.38 5717.34 5642.73 5658.41 5492.53 5529.81 5545.01 5546.29 5549.18 162.43 135.61
standard dev. 244.56 559.03 346.6 629.86 405.95 612.2 723.77 700.98 739.67 732.48 737.71 755.55 780.24 791.66 40.98 20.04
ci. min. 90% 2416.48 2731.02 3850.99 4332.05 5105.19 5598.5 5321.82 5279.32 5292.77 5038.5 5072.54 5076.68 5062.66 5058.46 137.03 123.19
ci. max 90% 2882.8 3650.77 4360.11 5175.85 5608.44 6308.26 6112.86 6006.14 6024.04 5946.56 5987.08 6013.33 6029.92 6039.89 187.83 148.03
geom. mean 2640.68 3142.11 4093.16 4716.46 5343.08 5925.72 5672.94 5600.72 5611.56 5448.27 5485.28 5498.42 5496.5 5497.95 157.29 134.22
median 2707.94 3378.68 4036.0 4652.1 5351.2 5889.93 5697.22 5814.01 5790.83 5858.78 5921.57 5952.68 5974.9 5978.24 169.09 141.53
first quartile 2409.29 3163.48 4005.4 4499.21 5211.57 5632.02 5404.88 5103.29 5090.64 4660.69 4683.12 4690.02 4659.96 4634.03 130.34 111.94
third quartile 2736.2 3476.58 4197.83 5209.6 5684.83 6322.52 6273.02 6197.07 6306.75 5941.52 5971.36 5986.86 6025.53 6025.1 199.45 152.9
minimum 2409.29 2115.72 3568.94 3674.02 4740.37 5156.49 4376.13 4540.02 4449.36 4612.96 4661.32 4658.81 4627.7 4630.93 94.06 106.65
maximum 2985.5 3671.34 4727.45 5732.97 5951.01 7170.94 6503.29 6441.87 6490.97 6439.83 6514.03 6553.05 6545.14 6584.02 204.49 154.85
lvm2mean val. 2970.57 3747.06 4486.31 4640.93 5452.7 5936.61 5752.42 5756.73 5671.15 5483.63 5521.84 5540.71 5553.36 5552.56 136.02 110.98
standard dev. 889.08 468.67 611.11 298.06 409.21 388.51 615.37 667.99 730.75 726.08 745.54 763.06 785.73 791.88 30.33 14.26
ci. min. 90% 2122.93 3361.51 4037.48 4441.28 5199.05 5711.39 5416.14 5410.42 5309.93 5033.57 5059.71 5067.73 5066.33 5061.71 117.21 102.14
ci. max 90% 3818.21 4132.61 4935.15 4840.58 5706.34 6161.82 6088.71 6103.03 6032.38 5933.68 5983.96 6013.69 6040.4 6043.4 154.82 119.81
geom. mean 2876.54 3722.25 4451.31 4632.43 5438.93 5925.01 5721.86 5720.05 5626.3 5440.18 5476.17 5493.14 5503.02 5501.34 132.61 110.11
median 2855.42 3794.81 4036.0 4606.08 5378.65 5997.09 5773.69 5829.33 5760.02 5843.73 5922.61 5955.72 5951.25 5959.44 150.58 115.76
first quartile 2600.49 3333.08 4028.26 4533.87 5344.38 5735.17 5286.97 5257.01 5092.18 4714.88 4661.73 4665.41 4657.51 4649.26 117.02 98.63
third quartile 2855.42 4105.15 5107.42 4793.68 5586.4 6158.89 6192.67 6295.94 6367.18 5910.64 5959.03 5958.49 6007.42 6021.33 159.62 122.89
minimum 2083.72 3200.67 3900.87 4097.55 4697.89 5333.53 4722.24 4725.44 4577.75 4602.36 4635.33 4648.12 4637.6 4626.23 82.1 85.97
maximum 4457.8 4304.3 5195.97 5104.97 6133.77 6580.3 6722.16 6638.12 6594.94 6410.3 6426.39 6538.61 6572.66 6556.2 167.05 124.72
qcow2 lvm2 difference 5.45 % 12.32 % 0.0 % -0.99 % 0.51 % 1.82 % 1.34 % 0.26 % -0.53 % -0.26 % 0.02 % 0.05 % -0.4 % -0.31 % -10.95 % -18.21 %
ttest p-value 0.4588 0.0914 0.1771 0.6535 0.6246 0.9425 0.9037 0.6873 0.9651 0.9797 0.9821 0.9906 0.9849 0.9929 0.1397 0.0084
ttest equality SAME DIFF SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME DIFF
fread_BS
Fread Block size [kB] 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384
qcow2mean val. 4416.71 5017.8 4976.17 5301.4 4898.65 4944.69 4780.28 4949.37 4815.14 4138.87 3708.85 3639.17 3543.26
standard dev. 1134.7 1689.74 1550.15 1527.37 2216.82 2144.03 2050.77 2139.78 2194.41 1971.63 1863.87 1962.72 2076.22
ci. min. 90% 3713.37 3970.41 4015.31 4354.67 3927.1 3969.65 3809.64 3891.64 3677.5 3061.42 2628.4 2422.58 2152.53
ci. max 90% 5120.06 6065.18 5937.03 6248.14 5870.2 5919.73 5750.91 6007.11 5952.78 5216.32 4789.3 4855.76 4933.99
geom. mean 4265.62 4694.72 4730.27 5078.41 3287.06 3335.84 3198.76 3299.23 3142.68 2704.67 2387.57 2242.61 2061.27
median 4878.2 5810.85 4740.37 5951.01 6079.39 6134.7 5741.26 5846.51 5802.17 5110.7 4609.96 4642.81 4653.15
first quartile 3568.94 4231.44 3674.02 3974.8 3896.14 4333.73 4716.18 5614.11 5204.17 4656.75 4417.1 4449.36 3525.91
third quartile 5242.22 6409.36 6441.87 6454.14 6458.38 6241.75 5940.06 5971.36 5929.35 5128.26 4630.13 4660.69 4676.55
minimum 2409.29 2115.72 2409.29 2985.5 94.06 111.94 111.84 137.05 141.53 149.23 152.9 154.52 154.85
maximum 5604.34 6490.97 6493.22 7170.94 6584.02 6335.7 5978.24 6011.71 6025.53 5156.49 4679.77 4686.5 4690.02
lvm2mean val. 4411.1 5287.03 5135.82 5180.55 4927.25 5046.3 4901.12 4944.76 4888.21 4229.35 3749.64 3662.34 3535.49
standard dev. 1082.86 1443.97 1393.16 1201.67 2194.15 2142.35 2059.1 2154.65 2230.22 2025.05 1900.41 1996.71 2092.77
ci. min. 90% 3739.88 4391.99 4272.26 4435.69 3965.64 4072.03 3926.54 3879.68 3732.01 3122.71 2648.0 2424.67 2133.68
ci. max 90% 5082.31 6182.08 5999.37 5925.4 5888.87 6020.57 5875.7 6009.84 6044.42 5336.0 4851.27 4900.0 4937.31
geom. mean 4258.53 5078.16 4940.5 5045.58 3247.3 3341.71 3226.42 3200.6 3103.36 2653.09 2318.68 2142.49 1954.32
median 4697.89 5586.4 5371.76 5344.38 6114.53 6223.11 5817.56 5910.64 5810.94 5129.13 4634.39 4637.6 4653.39
first quartile 4036.0 4757.54 4167.44 4457.8 4237.22 4858.12 5206.38 5635.7 5547.88 5055.47 4583.9 4623.6 3517.85
third quartile 5336.43 6580.3 6263.89 6173.51 6414.33 6314.23 5944.09 5956.77 5971.13 5145.29 4658.33 4659.3 4666.91
minimum 2083.72 2855.42 2600.49 3200.67 82.1 95.64 98.63 110.55 115.76 121.24 122.89 123.38 124.72
maximum 5391.22 6638.12 6722.16 6425.83 6572.66 6398.39 6022.81 6002.05 6133.77 5333.53 4725.44 4778.6 4714.88
qcow2 lvm2 difference -3.7 % -3.86 % 13.32 % -10.19 % 0.58 % 1.44 % 1.33 % 1.1 % 0.15 % 0.36 % 0.53 % -0.11 % 0.01 %
ttest p-value 0.9916 0.7211 0.8212 0.8543 0.971 0.8976 0.8776 0.9957 0.9362 0.9165 0.9619 0.9805 0.9942
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
fread\_compare
Regression line
slope 1.01006
std. error 0.01009
ci. max 90% 0.99336
ci. min. 90% 1.02677
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Freread

freread_FS
Freread File size [kB] 64 128 256 512 1024 2048 4096 8192 16384 32768 65536 131072 262144 524288 1048576 2097152
qcow2mean val. 5330.81 5558.78 5684.68 6668.06 7678.57 7315.72 6023.53 5819.4 5767.89 5517.83 5547.7 5541.18 5544.26 5549.2 164.2 139.67
standard dev. 871.59 1474.66 922.71 1058.65 448.81 1013.01 621.4 712.86 743.72 746.43 769.77 780.88 799.46 801.28 41.14 20.76
ci. min. 90% 4499.84 4345.67 5006.99 5958.94 7400.37 6728.5 5683.94 5449.84 5400.26 5055.15 5070.56 5057.16 5048.71 5052.52 138.7 126.8
ci. max 90% 6161.78 6771.9 6362.37 7377.18 7956.76 7902.95 6363.11 6188.97 6135.53 5980.5 6024.85 6025.21 6039.81 6045.87 189.7 152.54
geom. mean 5275.1 5417.89 5621.25 6592.9 7666.82 7243.68 5992.7 5777.72 5721.5 5471.93 5499.21 5491.21 5491.84 5496.63 159.08 138.23
median 4872.05 5444.14 5553.73 6805.21 7684.61 7714.41 6061.56 5825.35 5888.91 5924.99 5966.85 5987.2 5994.61 5979.84 173.56 146.42
first quartile 4783.15 4608.92 5553.73 5812.39 7348.04 6931.63 5718.34 5387.91 5206.75 4719.69 4669.43 4635.36 4624.19 4619.9 130.68 115.46
third quartile 6270.53 5472.41 5752.83 7468.34 8007.37 8003.97 6472.19 6445.61 6399.97 6017.43 6037.17 6023.54 6030.06 6043.02 201.74 157.06
minimum 4457.8 4304.3 4231.44 5271.8 6946.45 5050.93 4767.87 4627.04 4641.7 4584.59 4619.21 4629.96 4596.54 4609.83 96.27 109.56
maximum 6270.53 8347.78 7394.46 8198.22 8275.96 8130.03 6757.36 6661.85 6697.62 6459.36 6574.82 6566.12 6568.64 6580.8 206.63 160.2
lvm2mean val. 5818.52 6192.92 7212.67 7625.13 7979.44 7483.83 5908.89 5835.09 5743.51 5535.97 5544.47 5540.42 5552.32 5550.49 135.51 110.63
standard dev. 992.28 677.43 705.57 1060.07 545.27 1037.06 674.89 722.69 737.36 753.54 768.51 790.0 802.78 801.26 30.21 13.82
ci. min. 90% 4872.49 5635.64 6694.46 6915.06 7641.46 6882.67 5540.08 5460.43 5379.02 5068.89 5068.1 5050.74 5054.72 5053.83 116.79 102.06
ci. max 90% 6764.54 6750.2 7730.88 8335.21 8317.43 8085.0 6277.7 6209.76 6108.0 6003.05 6020.83 6030.1 6049.92 6047.15 154.24 119.19
geom. mean 5747.35 6162.97 7181.78 7558.01 7961.9 7409.34 5871.32 5791.84 5697.85 5489.45 5496.01 5489.19 5499.6 5498.04 132.15 109.81
median 6270.53 6079.88 7142.61 7936.87 8068.98 7880.41 5998.71 5906.99 5961.63 5917.16 5980.14 5969.29 5980.62 5961.74 146.46 114.98
first quartile 5159.74 5759.07 6958.05 7051.46 7872.11 6933.66 5638.34 5458.48 5128.37 4696.9 4654.21 4639.36 4635.83 4634.78 116.16 98.56
third quartile 6270.53 6491.17 7693.76 8103.56 8341.8 8193.55 6440.89 6337.57 6321.6 6004.78 5999.79 6016.18 6031.08 6022.97 162.33 121.61
minimum 4457.8 5415.88 5964.4 5877.57 6800.04 5090.77 4545.68 4618.76 4652.65 4617.56 4625.26 4605.3 4605.39 4613.94 82.23 86.32
maximum 6933.98 7301.48 8078.04 9246.47 8476.67 8331.9 6690.0 6716.52 6702.97 6522.45 6506.77 6509.99 6564.95 6581.24 166.52 124.95
qcow2 lvm2 difference 28.7 % 11.68 % 28.61 % 16.63 % 5.0 % 2.15 % -1.04 % 1.4 % 1.23 % -0.13 % 0.22 % -0.3 % -0.23 % -0.3 % -15.61 % -21.47 %
ttest p-value 0.4329 0.3611 0.0045 0.0923 0.2194 0.7181 0.683 0.9578 0.9338 0.9597 0.993 0.9984 0.9832 0.9973 0.1112 0.003
ttest equality SAME SAME DIFF DIFF SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME DIFF
freread_BS
Freread Block size [kB] 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384
qcow2mean val. 5543.94 6334.49 6788.5 6610.59 5838.03 5588.68 5268.02 5509.84 5243.82 4255.16 3751.87 3646.81 3541.23
standard dev. 891.15 1231.0 1209.45 1112.87 2337.23 2313.97 2253.62 2519.78 2473.75 2019.97 1883.52 1964.63 2072.87
ci. min. 90% 4991.56 5571.45 6038.82 5920.77 4813.71 4536.36 4201.38 4264.27 3961.36 3151.29 2660.03 2429.03 2152.75
ci. max 90% 6096.32 7097.53 7538.17 7300.4 6862.35 6641.0 6334.66 6755.41 6526.28 5359.03 4843.71 4864.58 4929.71
geom. mean 5478.17 6220.71 6682.22 6525.83 3933.97 3750.15 3491.15 3600.49 3379.1 2777.58 2419.09 2254.3 2071.54
median 5555.73 6660.52 6698.01 6436.92 6492.53 6279.35 5945.92 6002.19 6020.49 5127.48 4623.43 4619.9 4629.78
first quartile 5271.8 5553.73 6562.7 5961.11 6160.83 5896.93 5726.13 5952.11 5817.3 5083.86 4591.48 4596.54 3509.03
third quartile 6251.73 6948.68 7468.34 7394.46 6576.31 6344.15 5992.76 6061.56 6038.63 5185.24 4648.63 4639.59 4678.2
minimum 4231.44 4339.93 4457.8 4872.05 96.27 115.14 115.46 140.44 146.42 152.89 157.06 159.9 160.2
maximum 6946.45 8130.03 8347.78 8195.11 8130.03 7937.7 7491.13 8198.22 8275.96 5281.0 4767.87 4708.2 4719.69
lvm2mean val. 5941.32 6628.94 6884.41 7108.75 6153.28 6022.34 5687.34 5509.69 5181.17 4214.25 3726.63 3627.85 3531.37
standard dev. 597.18 1265.32 726.92 826.14 2470.26 2601.87 2531.26 2550.46 2402.94 2016.43 1888.81 1975.43 2091.75
ci. min. 90% 5571.16 5844.64 6433.83 6596.67 5070.66 4839.09 4489.29 4248.95 3935.42 3112.32 2631.73 2403.38 2130.24
ci. max 90% 6311.48 7413.25 7334.99 7620.83 7235.9 7205.59 6885.39 6770.42 6426.92 5316.18 4821.54 4852.32 4932.5
geom. mean 5915.15 6515.99 6851.95 7067.66 4020.9 3899.45 3641.1 3480.59 3243.5 2648.29 2303.52 2133.49 1942.72
median 5710.84 6702.97 6649.96 6569.56 6543.7 6333.59 5974.72 6004.78 5999.36 5126.59 4617.31 4613.94 4637.6
first quartile 5551.87 5877.57 6276.66 6513.38 6431.69 6269.85 5926.05 5788.43 5855.93 5036.21 4560.58 4605.39 3517.72
third quartile 6496.64 7142.61 7236.41 7801.74 7378.38 7087.05 7138.16 6013.48 6025.0 5141.05 4637.89 4625.26 4664.88
minimum 5159.74 4457.8 6255.99 6270.53 82.23 95.91 98.56 111.07 114.98 121.61 123.38 124.95 118.86
maximum 6800.04 8331.9 8193.55 8341.8 8408.69 9246.47 8078.04 8198.22 7452.49 5178.31 4671.75 4652.65 4704.51
qcow2 lvm2 difference 2.79 % 0.64 % -0.72 % 2.06 % 0.79 % 0.86 % 0.48 % 0.04 % -0.35 % -0.02 % -0.13 % -0.13 % 0.17 %
ttest p-value 0.2829 0.6236 0.841 0.2969 0.7134 0.6333 0.6473 0.9999 0.9504 0.9625 0.9765 0.984 0.9926
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
freread\_compare
Regression line
slope 1.03852
std. error 0.01737
ci. max 90% 1.00977
ci. min. 90% 1.06728
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Overall summary

summary
Operation ALL Write Re-write Read Re-read Random read Random write Backwards read Record rewrite Strided Read Fwrite Frewrite Fread Freread
qcow2mean val. 3855.13 1072.51 2353.78 5110.76 5373.65 5491.63 2546.57 4501.32 4321.1 5001.72 2185.93 2288.0 4602.22 5267.49
standard dev. 2317.03 626.76 1357.22 2087.05 2294.83 2407.15 1500.47 1942.35 1176.56 2232.12 1288.05 1338.44 1949.94 2176.55
ci. min. 90% 3767.0 986.04 2166.53 4822.82 5057.04 5159.53 2339.55 4233.34 4158.78 4693.76 2008.22 2103.34 4333.2 4967.2
ci. max 90% 3943.26 1158.98 2541.03 5398.7 5690.25 5823.74 2753.58 4769.29 4483.42 5309.67 2363.64 2472.65 4871.24 5567.78
geom. mean 2372.45 769.15 1467.63 3562.22 3717.23 3514.57 1402.58 3094.02 4141.49 3310.41 1377.51 1434.19 3277.4 3727.28
median 4037.51 1328.19 2883.28 5891.91 6020.95 5953.81 3071.73 5087.9 4666.79 5681.74 2656.91 2824.95 5144.18 5889.99
first quartile 2186.17 352.61 966.87 4678.66 4656.69 4667.54 1466.94 4147.95 3084.0 4591.68 877.98 1097.17 4315.62 4651.57
third quartile 5875.87 1638.67 3484.72 6291.17 6584.16 6520.61 3703.06 5936.24 5264.72 6216.29 3205.64 3242.75 5972.25 6462.44
minimum 9.46 120.32 125.29 111.99 125.25 9.46 23.3 26.71 1738.29 25.76 108.32 126.02 94.06 96.27
maximum 10526.67 1860.49 3823.77 9213.74 10526.67 9549.38 4805.01 6450.47 6011.94 9069.72 4383.65 5048.48 7170.94 8347.78
lvm2mean val. 3888.08 1066.77 2383.93 5190.59 5448.97 5404.65 2512.81 4553.42 4299.83 5018.48 2218.2 2327.29 4663.07 5456.99
standard dev. 2340.53 632.64 1382.72 2156.49 2337.29 2323.22 1502.38 1940.46 1191.64 2198.33 1326.02 1382.68 1934.35 2289.31
ci. min. 90% 3799.05 979.49 2193.17 4893.07 5126.51 5084.12 2305.53 4285.71 4135.42 4715.19 2035.26 2136.53 4396.19 5141.14
ci. max 90% 3977.1 1154.06 2574.7 5488.11 5771.43 5725.17 2720.08 4821.14 4464.23 5321.77 2401.15 2518.06 4929.94 5772.83
geom. mean 2326.88 741.67 1415.73 3512.71 3653.62 3423.32 1347.01 3096.27 4117.51 3294.69 1327.45 1387.84 3256.74 3743.39
median 4167.44 1312.44 2865.3 5950.24 6003.98 5954.04 2950.43 5132.36 4453.49 5747.53 2732.81 2866.83 5145.29 5991.09
first quartile 2222.19 348.58 1109.84 4679.42 4687.39 4656.55 1271.52 4347.12 3082.93 4608.59 783.56 1065.53 4568.61 4657.5
third quartile 5906.37 1635.83 3538.3 6390.92 6553.89 6496.64 3678.58 5918.99 5291.09 6223.75 3237.21 3280.93 5962.42 6598.42
minimum 9.06 97.06 97.28 100.3 100.7 9.06 19.73 27.11 1650.72 24.75 94.54 97.94 82.1 82.23
maximum 9637.14 1872.54 3823.77 9566.3 9637.14 9295.42 4855.61 6916.7 6067.82 9501.17 4343.68 5317.28 6722.16 9246.47
linear regression slope 90% 0.99 - 1.01 1.0 - 1.03 0.99 - 1.04 0.98 - 1.05 0.95 - 1.01 0.98 - 1.0 0.99 - 1.03 0.97 - 1.02 0.98 - 1.02 1.0 - 1.04 1.01 - 1.03 0.99 - 1.03 1.01 - 1.07
qcow2 lvm2 difference 3.22 % -1.19 % -0.62 % 0.99 % -0.28 % 0.0 % -3.95 % 0.87 % -4.57 % 1.16 % 2.86 % 1.48 % 0.02 % 1.72 %
ttest p-value 0.6652 0.9384 0.852 0.7498 0.7828 0.7552 0.8488 0.82 0.8789 0.9489 0.8342 0.8066 0.7906 0.4722
ttest equality SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME SAME
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