btrfs test results diorandread results metric baseline current stdev diff ============================================================================================= avg_commit_ms 57.56 56.45 2.10 -1.92% bg_count 20 20 0 0.00% btrfs_commit_transaction_calls 16 16 0 0.00% btrfs_commit_transaction_ns_max 81357380.70 79477339 5374289.93 -2.31% btrfs_commit_transaction_ns_mean 57156211.25 55724724.69 2489893.09 -2.50% btrfs_commit_transaction_ns_min 25311956.80 24340877.60 1405948.41 -3.84% btrfs_commit_transaction_ns_p50 70318975.45 70996268.15 1477955.89 0.96% btrfs_commit_transaction_ns_p95 80708241.90 78738733.53 5270765.85 -2.44% btrfs_commit_transaction_ns_p99 81227552.94 79329617.91 5349797.51 -2.34% commits 17 17 0 0.00% elapsed 19.70 19.20 1.34 -2.54% end_state_mount_ns 9957296.50 10075099.70 2266023.18 1.18% end_state_umount_ns 1.02e+09 1.03e+09 1956543.51 0.12% find_free_extent_calls 3945.90 3947.50 9.80 0.04% find_free_extent_ns_max 27386 27660 3043.32 1.00% find_free_extent_ns_mean 1346.17 1348.67 45.65 0.19% find_free_extent_ns_min 484 488 5.16 0.83% find_free_extent_ns_p50 638 658 9.19 3.13% find_free_extent_ns_p95 6311.15 6095.35 278.23 -3.42% find_free_extent_ns_p99 6931.59 6824.27 335.21 -1.55% max_commit_ms 81.20 79 5.05 -2.71% read_bw_bytes 9.15e+08 9.29e+08 59139229.06 1.52% read_clat_ns_mean 69389.19 68544.56 2828.88 -1.22% read_clat_ns_p50 67481.60 66918.40 2835.84 -0.83% read_clat_ns_p99 123545.60 120371.20 16064.53 -2.57% read_io_bytes 1.72e+10 1.72e+10 0 0.00% read_io_kbytes 16777216 16777216 0 0.00% read_iops 223306.14 226691.67 14438.29 1.52% read_lat_ns_max 5053495.40 1469919.50 6760317.92 -70.91% read_lat_ns_mean 69473.51 68625.43 2829.81 -1.22% read_lat_ns_min 15844 15776 881.50 -0.43% sys_cpu 11.73 11.97 0.47 2.07% smallfiles100k results metric baseline current stdev diff ===================================================================================== bg_count 23 24 0 4.35% elapsed 23.30 22.80 0.67 -2.15% end_state_mount_ns 11259667.90 25866716.60 1705827.13 129.73% end_state_umount_ns 2.86e+09 3.07e+09 2.93e+08 7.48% find_free_extent_calls 405569.30 414499 7648.74 2.20% find_free_extent_ns_max 6357187.90 5635184.50 2814227.78 -11.36% find_free_extent_ns_mean 994.64 1023.23 29.67 2.87% find_free_extent_ns_min 490 505 0 3.06% find_free_extent_ns_p50 846 864 27.97 2.13% find_free_extent_ns_p95 1603 1700 36.83 6.05% find_free_extent_ns_p99 3232 3391 98.86 4.92% sys_cpu 23.70 23.21 1.44 -2.09% write_bw_bytes 9.77e+08 9.96e+08 25227761.53 1.98% write_clat_ns_mean 4153.11 4011.01 481.51 -3.42% write_clat_ns_p50 3296 3190.40 259.20 -3.20% write_clat_ns_p99 12096 11507.20 942.54 -4.87% write_io_kbytes 20971520 20971520 0 0.00% write_iops 238468.40 243189.09 6159.12 1.98% write_lat_ns_max 32201085.60 36838101.80 3270005.35 14.40% write_lat_ns_mean 4200.51 4058.69 481.38 -3.38% write_lat_ns_min 1889 1892 31.07 0.16% bufferedrandwrite16g results metric baseline current stdev diff ============================================================================================= avg_commit_ms 483.45 483.00 39.68 -0.09% btrfs_commit_transaction_calls 94.40 92.80 3.44 -1.69% btrfs_commit_transaction_ns_max 8.86e+08 8.53e+08 2.43e+08 -3.66% btrfs_commit_transaction_ns_mean 5.25e+08 5.25e+08 41811930.83 -0.03% btrfs_commit_transaction_ns_min 1.36e+08 1.30e+08 47570144.04 -4.80% btrfs_commit_transaction_ns_p50 5.42e+08 5.48e+08 25678215.08 1.17% btrfs_commit_transaction_ns_p95 7.61e+08 7.49e+08 1.32e+08 -1.64% btrfs_commit_transaction_ns_p99 8.16e+08 8.15e+08 1.41e+08 -0.05% commits 95.90 94.10 3.21 -1.88% elapsed 95.60 94.10 4.84 -1.57% end_state_mount_ns 24596227.50 39754091.50 3057791.35 61.63% end_state_umount_ns 1.99e+09 1.99e+09 14147780.32 0.17% find_free_extent_calls 5170470.90 5155276.80 34120.35 -0.29% find_free_extent_ns_max 4502718 2474591 3188505.44 -45.04% find_free_extent_ns_mean 1096.53 1128.03 13.21 2.87% find_free_extent_ns_min 491 502 5.68 2.24% find_free_extent_ns_p50 945 979 13.54 3.60% find_free_extent_ns_p95 1867 1928 25.84 3.27% find_free_extent_ns_p99 2605 2631 34.40 1.00% max_commit_ms 1046.40 830.10 398.82 -20.67% sys_cpu 31.68 32.01 1.78 1.04% write_bw_bytes 1.81e+08 1.84e+08 8094702.30 1.49% write_clat_ns_mean 22000.73 21709.65 1134.03 -1.32% write_clat_ns_p50 6528 6534.40 176.56 0.10% write_clat_ns_p99 25548.80 25472 1915.92 -0.30% write_io_kbytes 16777216 16777216 0 0.00% write_iops 44257.43 44919.00 1976.25 1.49% write_lat_ns_max 8.03e+08 7.65e+08 2.68e+08 -4.76% write_lat_ns_mean 22058.53 21762.08 1133.81 -1.34% write_lat_ns_min 2550 2589 30.91 1.53% randwrite2xram results metric baseline current stdev diff ============================================================================================ avg_commit_ms 459.68 470.12 15.99 2.27% btrfs_commit_transaction_calls 54.70 55.40 5.79 1.28% btrfs_commit_transaction_ns_max 8.53e+08 8.63e+08 50651394.04 1.17% btrfs_commit_transaction_ns_mean 5.11e+08 5.26e+08 15909565.86 2.79% btrfs_commit_transaction_ns_min 1.33e+08 1.50e+08 43374723.32 12.47% btrfs_commit_transaction_ns_p50 5.53e+08 5.62e+08 21458900.21 1.74% btrfs_commit_transaction_ns_p95 7.42e+08 7.61e+08 31799711.31 2.48% btrfs_commit_transaction_ns_p99 8.32e+08 8.36e+08 46373752.30 0.57% commits 56.30 57.30 5.42 1.78% elapsed 65.60 66.50 3.06 1.37% end_state_mount_ns 21877841.70 36258502.60 2940247.13 65.73% end_state_umount_ns 1.89e+09 1.95e+09 1.38e+08 3.28% find_free_extent_calls 4242732.90 4268368.20 75022.05 0.60% find_free_extent_ns_max 6823016.80 6218041.60 3517977.30 -8.87% find_free_extent_ns_mean 993.41 1035.84 11.78 4.27% find_free_extent_ns_min 488 501 4.22 2.66% find_free_extent_ns_p50 832 874 10.33 5.05% find_free_extent_ns_p95 1671 1726 11.97 3.29% find_free_extent_ns_p99 2196 2225 25.91 1.32% max_commit_ms 812.30 832.20 49.59 2.45% sys_cpu 8.17 8.00 0.42 -2.01% write_bw_bytes 2.17e+08 2.14e+08 12919562.97 -1.59% write_clat_ns_mean 74703.78 76016.51 4146.66 1.76% write_clat_ns_p50 5132.80 5107.20 52.69 -0.50% write_clat_ns_p99 53913.60 54886.40 3882.81 1.80% write_io_kbytes 11602766.80 11595064 54417.38 -0.07% write_iops 53034.50 52191.37 3154.19 -1.59% write_lat_ns_max 7.84e+08 8.04e+08 44205899.70 2.50% write_lat_ns_mean 74757.49 76067.06 4148.38 1.75% write_lat_ns_min 2740 2750 41.63 0.36% untarfirefox results metric baseline current stdev diff =================================================================================== bg_count 5 7 0 40.00% elapsed 19.47 19.34 0.12 -0.68% end_state_mount_ns 8945201.40 8862766.30 2017597.56 -0.92% end_state_umount_ns 2.53e+09 2.57e+09 49932243.72 1.51% find_free_extent_calls 110685 110403.60 431.65 -0.25% find_free_extent_ns_max 143339 85392.10 157213.11 -40.43% find_free_extent_ns_mean 1154.28 1205.70 11.36 4.45% find_free_extent_ns_min 471 487 20.25 3.40% find_free_extent_ns_p50 1087 1134 18.89 4.32% find_free_extent_ns_p95 1874 1937.25 12.65 3.38% find_free_extent_ns_p99 2574 2712 30.98 5.36% dio4kbs16threads results metric baseline current stdev diff ========================================================================================== avg_commit_ms 1243.35 1086 404.64 -12.66% bg_count 25.10 26.30 0.32 4.78% btrfs_commit_transaction_calls 1.10 1.20 0.32 9.09% btrfs_commit_transaction_ns_max 1.32e+09 1.23e+09 3.90e+08 -6.70% btrfs_commit_transaction_ns_mean 1.31e+09 1.19e+09 3.91e+08 -9.18% btrfs_commit_transaction_ns_min 1.29e+09 1.14e+09 3.98e+08 -11.70% btrfs_commit_transaction_ns_p50 1.31e+09 1.19e+09 3.91e+08 -9.18% btrfs_commit_transaction_ns_p95 1.32e+09 1.23e+09 3.90e+08 -6.95% btrfs_commit_transaction_ns_p99 1.32e+09 1.23e+09 3.90e+08 -6.75% commits 1.10 1.20 0.32 9.09% elapsed 58 57.40 0.47 -1.03% end_state_mount_ns 9390546.50 9096473.30 1508602.30 -3.13% end_state_umount_ns 2.46e+09 2.36e+09 1.09e+08 -4.10% find_free_extent_calls 1606886.50 1603875.70 15666.63 -0.19% find_free_extent_ns_max 792435.10 711466.10 501217.20 -10.22% find_free_extent_ns_mean 2657.95 2512.25 29.38 -5.48% find_free_extent_ns_min 522 526 7.89 0.77% find_free_extent_ns_p50 2225 2098 23.69 -5.71% find_free_extent_ns_p95 3938 3497 46.62 -11.20% find_free_extent_ns_p99 13879 13530.01 125.83 -2.51% frag_pct_max 99.99 99.99 0.00 -0.00% frag_pct_mean 86.17 86.14 0.05 -0.03% frag_pct_min 4.28 3.95 0.21 -7.84% frag_pct_p50 99.98 99.98 0.00 0.00% frag_pct_p95 99.99 99.99 0.00 -0.00% frag_pct_p99 99.99 99.99 0.00 -0.00% fragmented_bg_count 7 7 0 0.00% max_commit_ms 1260.90 1103.70 388.52 -12.47% sys_cpu 12.11 12.22 0.08 0.90% write_bw_bytes 3.00e+08 3.03e+08 1798922.16 0.90% write_clat_ns_mean 215157.26 213165.77 1259.83 -0.93% write_clat_ns_p50 72192 71270.40 1869.56 -1.28% write_clat_ns_p99 547225.60 543129.60 8678.19 -0.75% write_io_kbytes 16777216 16777216 0 0.00% write_iops 73203.82 73865.25 439.19 0.90% write_lat_ns_max 4.65e+08 4.29e+08 2.34e+08 -7.87% write_lat_ns_mean 215371.00 213331.49 1261.93 -0.95% write_lat_ns_min 22731 23323 975.82 2.60% correlatedlifetimes results metric baseline current stdev diff ==================================================================================== avg_commit_ms 23.13 22.47 0.93 -2.88% bg_count 74 74 0 0.00% commits 3 3 0 0.00% elapsed 9 10.40 0 15.56% end_state_mount_ns 9866714.50 10395377.90 1433655.71 5.36% end_state_umount_ns 1.04e+09 1.05e+09 5824602.93 0.40% find_free_extent_calls 1023916.50 1023715.80 3251.31 -0.02% find_free_extent_ns_max 42122 66553 23822.74 58.00% find_free_extent_ns_mean 1492.83 2808.37 25.91 88.12% find_free_extent_ns_min 479 516 5.68 7.72% find_free_extent_ns_p50 1419 1585 24.70 11.70% find_free_extent_ns_p95 2500 6041 36.51 141.64% find_free_extent_ns_p99 2662 6421 38.82 141.21% frag_pct_max 22.56 28.07 17.80 24.44% frag_pct_mean 22.56 28.07 17.80 24.44% frag_pct_min 22.56 28.07 17.80 24.44% frag_pct_p50 22.56 28.07 17.80 24.44% frag_pct_p95 22.56 28.07 17.80 24.44% frag_pct_p99 22.56 28.07 17.80 24.44% fragmented_bg_count 0.70 0.90 0.48 28.57% max_commit_ms 39.30 39 4.55 -0.76% sys_cpu 70.58 73.62 0.28 4.30% write_bw_bytes 2.85e+10 2.45e+10 4.28e+08 -14.00% write_clat_ns_mean 6813.19 8151.73 105.74 19.65% write_clat_ns_p50 6521.60 6854.40 109.61 5.10% write_clat_ns_p99 13593.60 15667.20 263.36 15.25% write_io_kbytes 2.36e+08 2.36e+08 0 0.00% write_iops 120925.08 103994.34 1816.59 -14.00% write_lat_ns_max 28116607.40 27652146.20 3619001.53 -1.65% write_lat_ns_mean 9469.34 10855.38 106.10 14.64% write_lat_ns_min 1534 1591 506.56 3.72% bufferedappendvsfallocate results metric baseline current stdev diff ====================================================================================== avg_commit_ms 31.13 29.20 2.67 -6.22% bg_count 14 15.60 0 11.43% commits 11.10 12.20 0.32 9.91% elapsed 27.30 26.40 2.98 -3.30% end_state_mount_ns 11122551.90 10635118.90 851143.04 -4.38% end_state_umount_ns 1.36e+09 1.35e+09 12248056.65 -1.07% find_free_extent_calls 116244.30 114354.30 964.56 -1.63% find_free_extent_ns_max 599507.20 1047168.20 103337.08 74.67% find_free_extent_ns_mean 3607.19 3672.11 101.20 1.80% find_free_extent_ns_min 500 512 6.67 2.40% find_free_extent_ns_p50 2848 2876 37.65 0.98% find_free_extent_ns_p95 4916 5000 75.45 1.71% find_free_extent_ns_p99 20734.49 20920.48 1670.93 0.90% frag_pct_max 61.67 0 8.05 -100.00% frag_pct_mean 43.59 0 6.10 -100.00% frag_pct_min 25.91 0 16.60 -100.00% frag_pct_p50 42.53 0 7.25 -100.00% frag_pct_p95 61.67 0 8.05 -100.00% frag_pct_p99 61.67 0 8.05 -100.00% fragmented_bg_count 6.10 0 1.45 -100.00% max_commit_ms 49.80 46 5.37 -7.63% sys_cpu 2.59 2.62 0.29 1.39% write_bw_bytes 1.62e+08 1.68e+08 17975843.50 3.23% write_clat_ns_mean 57426.39 54475.95 2292.72 -5.14% write_clat_ns_p50 46950.40 42905.60 2101.35 -8.62% write_clat_ns_p99 148070.40 143769.60 2115.17 -2.90% write_io_kbytes 4194304 4194304 0 0.00% write_iops 2476.15 2556.10 274.29 3.23% write_lat_ns_max 2101667.60 2251129.50 370556.59 7.11% write_lat_ns_mean 59374.91 55682.00 2523.09 -6.22% write_lat_ns_min 17353.10 16250 1646.08 -6.36% foursizes results metric baseline current stdev diff ====================================================================================== avg_commit_ms 14.93 13.93 1.12 -6.70% bg_count 41.90 49.20 1.73 17.42% commits 29.20 36.20 1.48 23.97% elapsed 16 16 1.25 0.00% end_state_mount_ns 10172655.80 10338676.60 2143604.24 1.63% end_state_umount_ns 1.34e+09 1.31e+09 10852505.38 -1.88% find_free_extent_calls 69923.30 64895.60 1251.26 -7.19% find_free_extent_ns_max 4799016.50 2916531.60 3155188.74 -39.23% find_free_extent_ns_mean 3495.31 3679.22 116.35 5.26% find_free_extent_ns_min 470 476 0 1.28% find_free_extent_ns_p50 2430 2587 89.81 6.46% find_free_extent_ns_p95 5986 6158 203.48 2.87% find_free_extent_ns_p99 19874.07 21858.61 1252.50 9.99% frag_pct_max 67.01 0 12.05 -100.00% frag_pct_mean 45.20 0 10.32 -100.00% frag_pct_min 26.22 0 13.58 -100.00% frag_pct_p50 44.20 0 13.09 -100.00% frag_pct_p95 67.01 0 12.05 -100.00% frag_pct_p99 67.01 0 12.05 -100.00% fragmented_bg_count 3.50 0 0.85 -100.00% max_commit_ms 26.90 44.20 4.12 64.31% sys_cpu 2.67 2.63 0.17 -1.32% write_bw_bytes 2.80e+08 2.80e+08 25561907.96 0.03% write_clat_ns_mean 107474.24 107284.81 3535.56 -0.18% write_clat_ns_p50 91443.20 90931.20 1727.03 -0.56% write_clat_ns_p99 281497.60 282624 9513.96 0.40% write_io_kbytes 4194304 4194304 0 0.00% write_iops 2138.86 2139.60 195.02 0.03% write_lat_ns_max 2722184.90 2099470.50 1079467.11 -22.88% write_lat_ns_mean 113369.74 113265.31 3464.67 -0.09% write_lat_ns_min 33039.10 32840 1950.05 -0.60% funnysizeslow results metric baseline current stdev diff ========================================================================================= avg_commit_ms 13.17 15.76 1.70 19.66% bg_count 28.60 34.40 0.84 20.28% commits 22.40 30.40 1.35 35.71% elapsed 17.60 17.40 1.35 -1.14% end_state_mount_ns 11097937.70 10461059.90 1497803.80 -5.74% end_state_umount_ns 1.35e+09 1.31e+09 7269216.45 -3.31% find_free_extent_calls 81214.50 80064.70 1206.92 -1.42% find_free_extent_ns_max 3535268 1243241.10 3487192.85 -64.83% find_free_extent_ns_mean 3101.72 3693.08 102.04 19.07% find_free_extent_ns_min 497 506 11.60 1.81% find_free_extent_ns_p50 2465 2663 64.68 8.03% find_free_extent_ns_p95 4860 7864 109.95 61.81% find_free_extent_ns_p99 14433.42 19721.62 876.97 36.64% frag_pct_max 60.45 91.77 14.70 51.82% frag_pct_mean 12.29 63.04 7.77 413.03% frag_pct_min 0.00 29.42 0.00 1347024.73% frag_pct_p50 1.79 68.75 5.61 3751.35% frag_pct_p95 58.30 91.77 14.81 57.41% frag_pct_p99 60.45 91.77 14.70 51.82% fragmented_bg_count 14.70 3.40 4.90 -76.87% max_commit_ms 21.30 70.50 2.58 230.99% sys_cpu 2.78 2.82 0.19 1.71% write_bw_bytes 2.53e+08 2.58e+08 20370612.70 2.04% write_clat_ns_mean 108808.39 108443.02 1154.53 -0.34% write_clat_ns_p50 92057.60 91443.20 1382.29 -0.67% write_clat_ns_p99 291225.60 291225.60 3454.05 0.00% write_io_kbytes 4194048 4194048 0 0.00% write_iops 1947.11 1986.87 156.64 2.04% write_lat_ns_max 1542276.40 1322527.30 475365.76 -14.25% write_lat_ns_mean 112783.77 112369.15 1282.68 -0.37% write_lat_ns_min 34650 34378 2683.27 -0.78% funnysizeshigh results metric baseline current stdev diff ==================================================================================== avg_commit_ms 13.24 14.77 2.44 11.57% bg_count 28.90 32.30 1.52 11.76% commits 22 28.50 0.67 29.55% elapsed 17.20 15.70 1.32 -8.72% end_state_mount_ns 10672301 9335423.60 3026124.79 -12.53% end_state_umount_ns 1.34e+09 1.30e+09 17518736.27 -3.50% find_free_extent_calls 76508.10 67767.60 925.44 -11.42% find_free_extent_ns_max 2535168.50 2036168.60 2306866.97 -19.68% find_free_extent_ns_mean 3137.35 3333.20 113.07 6.24% find_free_extent_ns_min 498 511 6.32 2.61% find_free_extent_ns_p50 2525 2600 52.55 2.97% find_free_extent_ns_p95 4829 5054.60 58.20 4.67% find_free_extent_ns_p99 14480.05 17501.28 895.26 20.86% frag_pct_max 65.30 0.40 9.27 -99.39% frag_pct_mean 19.07 0.40 8.15 -97.90% frag_pct_min 0.00 0.40 0.00 8129.13% frag_pct_p50 6.95 0.40 13.57 -94.25% frag_pct_p95 63.87 0.40 10.52 -99.37% frag_pct_p99 65.30 0.40 9.27 -99.39% fragmented_bg_count 14 0.10 6.82 -99.29% max_commit_ms 27.20 49.70 25.28 82.72% sys_cpu 2.86 2.99 0.21 4.60% write_bw_bytes 2.61e+08 2.84e+08 19198977.31 8.91% write_clat_ns_mean 109479.26 108348.84 1332.87 -1.03% write_clat_ns_p50 92262.40 91136 1100.77 -1.22% write_clat_ns_p99 295731.20 295731.20 3372.12 0.00% write_io_kbytes 4194048 4194048 0 0.00% write_iops 1976.57 2152.64 145.34 8.91% write_lat_ns_max 1515412.40 1591075.40 580820.03 4.99% write_lat_ns_mean 113459.86 112316.83 1298.64 -1.01% write_lat_ns_min 36152 35025 1673.16 -3.12% mixedlifetimes results metric baseline current stdev diff ===================================================================================== avg_commit_ms 24.12 24.48 1.58 1.48% bg_count 33.10 35.10 0.74 6.04% commits 28 28.90 0.82 3.21% elapsed 15.80 15.60 1.32 -1.27% end_state_mount_ns 12134947.10 11507961.20 1664316.68 -5.17% end_state_umount_ns 1.32e+09 1.31e+09 15238359.45 -0.53% find_free_extent_calls 1075926.10 1075468.70 1816.95 -0.04% find_free_extent_ns_max 1355460.50 3222666.60 1554790.49 137.75% find_free_extent_ns_mean 1312.61 1314.65 61.57 0.16% find_free_extent_ns_min 472 494 7.89 4.66% find_free_extent_ns_p50 1076 1071 39.21 -0.46% find_free_extent_ns_p95 2556 2472 157.07 -3.29% find_free_extent_ns_p99 4248 4220 182.14 -0.66% frag_pct_max 85.11 86.08 1.09 1.15% frag_pct_mean 56.61 63.35 8.88 11.90% frag_pct_min 14.97 20.49 9.57 36.86% frag_pct_p50 58.70 70.36 12.80 19.87% frag_pct_p95 84.20 85.59 1.24 1.66% frag_pct_p99 85.11 86.08 1.09 1.15% fragmented_bg_count 24.20 16.60 3.19 -31.40% max_commit_ms 61 53.60 9.49 -12.13% sys_cpu 2.50 2.44 0.14 -2.42% write_bw_bytes 2.90e+08 2.92e+08 25577881.22 0.69% write_clat_ns_mean 91323.80 86712.58 5404.30 -5.05% write_clat_ns_p50 75366.40 70348.80 3107.82 -6.66% write_clat_ns_p99 278937.60 271462.40 6166.71 -2.68% write_io_kbytes 4194304 4194304 0 0.00% write_iops 2209.00 2224.32 195.14 0.69% write_lat_ns_max 2187497.50 2441651.40 896470.49 11.62% write_lat_ns_mean 97706.40 92465.89 5579.84 -5.36% write_lat_ns_min 28347 28514 1290.08 0.59%