hi, - big and ugly mail. If you don't like them, delete it now :-) - I have collected and classified some information of: http://home.earthlink.net/~rwhron/kernel/bigbox.html And I observed that ext3 performance is worse than previous kernels(2.4.19...). -ac and -aa are here only as reference. Complete information is in the upper URL. dbench: Performance is worse. dbench (Numbers are in MB/second, so bigger is better) ====== dbench-1.3 ext3 192 processes Average +/- MB/sec 2.4.20-rc1aa1 79.3 5.3 2.4.19 61.1 1.1 2.4.21-pre4-ac3 60.1 1.7 2.4.20-rc1 60.6 3.2 2.4.21-rc6-ac1 49.9 7.5 2.4.23-rc1 45.4 0.8 2.4.22aa1 40.3 11.2 2.4.18 27.0 0.3 dbench-1.3 ext3 64 processes Averag +/- MB/sec 2.4.20-rc1aa1 102.6 16.0 2.4.21-rc6-ac1 86.1 14.5 2.4.21-pre4-ac3 84.9 14.6 2.4.19 83.6 12.8 2.4.20-rc1 81.3 12.4 2.4.22aa1 75.2 4.8 2.4.23-rc1 72.6 6.2 2.4.18 64.2 3.7 - tbench: Performance is worse than previous kernels, but not too much. tbench (Numbers are in MB/second, so bigger is better) ====== tbench-1.3 192 processes Average +/- MB/sec 2.4.22aa1 136.8 1.9 2.4.20-rc1aa1 105.4 3.4 2.4.21-rc6-ac1 103.4 2.8 2.4.21-pre4-ac3 101.7 2.1 2.4.18 29.8 0.1 2.4.19 29.6 0.1 2.4.20-rc1 28.1 0.2 2.4.23-rc1 26.4 0.3 tbench-1.3 64 processes Average +/- MB/sec 2.4.22aa1 135.2 5.4 2.4.20-rc1aa1 109.9 3.2 2.4.21-rc6-ac1 105.1 3.1 2.4.21-pre4-ac3 104.7 2.3 2.4.18 101.8 1.8 2.4.19 100.2 2.6 2.4.20-rc1 96.5 2.8 2.4.23-rc1 94.8 2.4 - tiobench(ext3): In 'Sequential Reads' and 'Sequential Writes', 'Maximum Latency' is _too much high_ tiobench ======== Sequential Reads ext3 File Blk Num Avg Maximum Lat% Lat% CPU Kernel Size Size Thr Rate (CPU%) Latency Latency &2s &10s Eff ---------------------------- ------ ----- --- ------------------------------------------------------------ 2.4.20-pre10 8192 4096 1 37.28 21.64% 0.312 135.50 0.00000 0.00000 172 2.4.20-pre8 8192 4096 1 37.34 21.38% 0.311 133.76 0.00000 0.00000 175 2.4.20-rc1 8192 4096 1 37.36 21.44% 0.311 421.18 0.00000 0.00000 174 2.4.21-pre4-ac3 8192 4096 1 30.50 16.92% 0.382 549.18 0.00000 0.00000 180 2.4.21-pre4aa1 8192 4096 1 50.38 28.03% 0.230 529.88 0.00000 0.00000 180 2.4.21-rc6-ac1 8192 4096 1 31.17 17.28% 0.373 856.73 0.00000 0.00000 180 2.4.22-pre7aa1 8192 4096 1 49.77 28.51% 0.233 660.13 0.00000 0.00000 175 2.4.22aa1 8192 4096 1 50.60 28.60% 0.229 791.48 0.00000 0.00000 177 2.4.23-pre4 8192 4096 1 27.65 14.80% 0.421 761.52 0.00000 0.00000 187 2.4.23-rc1 8192 4096 1 27.54 14.89% 0.423 731.87 0.00000 0.00000 185 2.4.20-pre10 8192 4096 256 7.20 4.92% 358.227 46127.19 5.62634 0.02361 146 2.4.20-pre8 8192 4096 256 7.42 5.07% 343.312 43765.93 5.46589 0.02732 146 2.4.20-rc1 8192 4096 256 7.14 4.87% 360.645 43486.21 5.66969 0.02255 147 2.4.21-pre4-ac3 8192 4096 256 7.08 4.56% 335.749 43307.31 5.60594 0.01083 155 2.4.21-pre4aa1 8192 4096 256 8.09 9.48% 204.764 696991.89 0.59543 0.44203 85 2.4.21-rc6-ac1 8192 4096 256 7.86 16.80% 292.629 939153.21 0.77891 0.54994 47 2.4.22-pre7aa1 8192 4096 256 7.04 16.77% 418.784 84440.45 2.40402 2.22159 42 2.4.22aa1 8192 4096 256 6.69 14.81% 443.855 63577.04 2.40921 2.29164 45 2.4.23-pre4 8192 4096 256 5.10 6.83% 430.551 1602091.53 0.35501 0.31585 75 2.4.23-rc1 8192 4096 256 5.04 6.94% 432.486 1937701.66 0.33408 0.29884 73 Random Reads ext3 File Blk Num Avg Maximum Lat% Lat% CPU Kernel Size Size Thr Rate (CPU%) Latency Latency &2s &10s Eff ---------------------------- ------ ----- --- ------------------------------------------------------------ 2.4.20-pre10 8192 4096 1 0.95 0.81% 12.341 75.99 0.00000 0.00000 117 2.4.20-pre8 8192 4096 1 0.96 1.23% 12.185 62.69 0.00000 0.00000 78 2.4.20-rc1 8192 4096 1 0.96 0.96% 12.176 46.93 0.00000 0.00000 100 2.4.21-pre4-ac3 8192 4096 1 0.91 1.09% 12.859 112.29 0.00000 0.00000 84 2.4.21-pre4aa1 8192 4096 1 0.91 0.93% 12.879 116.53 0.00000 0.00000 98 2.4.21-rc6-ac1 8192 4096 1 0.95 0.81% 12.295 41.46 0.00000 0.00000 117 2.4.22-pre7aa1 8192 4096 1 0.90 0.98% 13.014 335.35 0.00000 0.00000 92 2.4.22aa1 8192 4096 1 0.92 1.01% 12.797 111.10 0.00000 0.00000 90 2.4.23-pre4 8192 4096 1 0.91 0.88% 12.817 99.40 0.00000 0.00000 104 2.4.23-rc1 8192 4096 1 0.89 0.82% 13.118 123.33 0.00000 0.00000 109 2.4.20-pre10 8192 4096 256 2.33 4.40% 661.619 18451.11 12.91666 0.00000 53 2.4.20-pre8 8192 4096 256 2.35 3.34% 678.482 18276.93 12.99479 0.00000 70 2.4.20-rc1 8192 4096 256 2.32 2.67% 672.370 18505.69 12.81250 0.00000 87 2.4.21-pre4-ac3 8192 4096 256 2.35 2.40% 668.279 18366.33 12.99479 0.00000 98 2.4.21-pre4aa1 8192 4096 256 3.31 5.30% 485.616 10704.34 5.72916 0.00000 62 2.4.21-rc6-ac1 8192 4096 256 2.26 4.72% 700.081 18934.72 12.78646 0.00000 48 2.4.22-pre7aa1 8192 4096 256 3.38 6.16% 671.347 8870.86 5.20833 0.00000 55 2.4.22aa1 8192 4096 256 3.22 11.08% 785.687 1793.92 0.00000 0.00000 29 2.4.23-pre4 8192 4096 256 2.20 4.49% 839.345 5697.90 0.00000 0.00000 49 2.4.23-rc1 8192 4096 256 2.28 4.10% 878.192 2519.29 0.00000 0.00000 56 Sequential Writes ext3 File Blk Num Avg Maximum Lat% Lat% CPU Kernel Size Size Thr Rate (CPU%) Latency Latency &2s &10s Eff ---------------------------- ------ ----- --- ------------------------------------------------------------ 2.4.20-pre10 8192 4096 1 37.71 56.08% 0.288 4315.58 0.00000 0.00000 67 2.4.20-pre8 8192 4096 1 37.80 53.97% 0.287 4157.16 0.00000 0.00000 70 2.4.20-rc1 8192 4096 1 37.68 55.47% 0.288 4225.93 0.00000 0.00000 68 2.4.21-pre4-ac3 8192 4096 1 37.36 46.88% 0.290 3403.73 0.00000 0.00000 80 2.4.21-pre4aa1 8192 4096 1 40.48 49.75% 0.251 909.26 0.00000 0.00000 81 2.4.21-rc6-ac1 8192 4096 1 34.55 42.89% 0.326 15687.97 0.00397 0.00000 81 2.4.22-pre7aa1 8192 4096 1 43.37 56.97% 0.235 3174.53 0.00005 0.00000 76 2.4.22aa1 8192 4096 1 44.25 57.99% 0.230 718.76 0.00000 0.00000 76 2.4.23-pre4 8192 4096 1 41.66 57.58% 0.264 1032.96 0.00000 0.00000 72 2.4.23-rc1 8192 4096 1 39.69 54.68% 0.278 730.02 0.00000 0.00000 73 2.4.20-pre10 8192 4096 256 9.94 71.13% 134.323 61604.97 2.87437 0.03022 14 2.4.20-pre8 8192 4096 256 9.88 75.43% 133.434 62461.37 2.83661 0.03186 13 2.4.20-rc1 8192 4096 256 9.97 73.84% 133.300 65690.42 2.93164 0.02885 14 2.4.21-pre4-ac3 8192 4096 256 9.22 44.18% 134.944 36902.34 2.99883 0.00290 21 2.4.21-pre4aa1 8192 4096 256 7.38 41.41% 168.063 151496.74 2.74157 0.28987 18 2.4.21-rc6-ac1 8192 4096 256 4.96 25.59% 284.662 387169.56 2.23074 0.83136 19 2.4.22-pre7aa1 8192 4096 256 8.66 49.63% 142.657 83844.75 2.59070 0.11811 17 2.4.22aa1 8192 4096 256 12.57 65.96% 117.692 29694.33 1.48821 0.00000 19 2.4.23-pre4 8192 4096 256 9.46 53.32% 150.534 172363.64 2.09446 0.27799 18 2.4.23-rc1 8192 4096 256 9.09 50.56% 160.462 161442.23 2.30537 0.28430 18 Random Writes ext3 File Blk Num Avg Maximum Lat% Lat% CPU Kernel Size Size Thr Rate (CPU%) Latency Latency &2s &10s Eff ---------------------------- ------ ----- --- ------------------------------------------------------------ 2.4.20-pre10 8192 4096 1 3.72 3.81% 0.080 0.68 0.00000 0.00000 98 2.4.20-pre8 8192 4096 1 3.71 3.25% 0.079 0.70 0.00000 0.00000 114 2.4.20-rc1 8192 4096 1 3.72 3.81% 0.080 0.71 0.00000 0.00000 98 2.4.21-pre4-ac3 8192 4096 1 3.72 3.33% 0.082 0.62 0.00000 0.00000 112 2.4.21-pre4aa1 8192 4096 1 4.49 4.98% 0.067 0.68 0.00000 0.00000 90 2.4.21-rc6-ac1 8192 4096 1 3.85 3.69% 0.082 0.64 0.00000 0.00000 104 2.4.22-pre7aa1 8192 4096 1 4.60 5.11% 0.082 1.20 0.00000 0.00000 90 2.4.22aa1 8192 4096 1 4.61 5.81% 0.083 1.08 0.00000 0.00000 79 2.4.23-pre4 8192 4096 1 3.94 5.05% 0.086 0.64 0.00000 0.00000 78 2.4.23-rc1 8192 4096 1 3.94 5.04% 0.087 0.62 0.00000 0.00000 78 2.4.20-pre10 8192 4096 256 3.63 10.31% 0.482 273.57 0.00000 0.00000 35 2.4.20-pre8 8192 4096 256 3.62 13.36% 0.599 372.91 0.00000 0.00000 27 2.4.20-rc1 8192 4096 256 3.62 10.86% 0.478 247.68 0.00000 0.00000 33 2.4.21-pre4-ac3 8192 4096 256 3.62 10.94% 0.255 3.48 0.00000 0.00000 33 2.4.21-pre4aa1 8192 4096 256 4.39 30.16% 0.199 6.97 0.00000 0.00000 15 2.4.21-rc6-ac1 8192 4096 256 3.68 17.09% 0.260 1.39 0.00000 0.00000 22 2.4.22-pre7aa1 8192 4096 256 4.45 31.24% 0.241 7.13 0.00000 0.00000 14 2.4.22aa1 8192 4096 256 4.44 21.90% 0.247 7.29 0.00000 0.00000 20 2.4.23-pre4 8192 4096 256 3.83 29.77% 0.248 55.60 0.00000 0.00000 13 2.4.23-rc1 8192 4096 256 3.77 29.99% 0.256 59.45 0.00000 0.00000 13 - bonnie++-1.02c(ext3): Performance is a little worse than previous kernels. bonnie++-1.02c on ext3 ============== --------------------- Sequential Output ------------------ -------- Sequential Input ---------- ----- Random ----- ---- Per Char ----- ------ Block ----- ---- Rewrite ---- ---- Per Char --- ----- Block ----- ----- Seeks ----- Kernel Size MB/sec %CPU Eff MB/sec %CPU Eff MB/sec %CPU Eff MB/sec %CPU Eff MB/sec %CPU Eff /sec %CPU Eff 2.4.18 8192 9.03 99.0 9.12 28.65 38.3 75 18.35 25.0 73 9.13 96.3 9.5 30.40 18.0 169 383.9 2.67 14396 2.4.19 8192 8.97 98.0 9.15 41.43 51.3 81 19.94 21.0 95 9.15 97.0 9.4 30.85 18.3 168 385.9 2.33 16540 2.4.20-rc1 8192 8.85 97.0 9.12 41.20 52.3 79 19.78 21.0 94 9.16 97.0 9.4 30.71 18.3 167 617.7 5.00 12355 2.4.21-rc6-ac1 8192 7.92 87.0 9.10 43.34 47.0 92 17.38 17.0 102 9.38 99.0 9.5 31.04 14.0 222 604.0 2.67 22650 2.4.21-pre4-ac3 8192 8.85 97.0 9.13 41.51 45.3 92 17.02 16.0 106 9.37 99.0 9.5 31.41 14.7 214 614.5 3.00 20482 2.4.22aa1 8192 8.92 95.0 9.39 51.80 57.7 90 22.52 23.7 95 8.82 91.0 9.7 51.78 26.3 197 560.9 3.00 18698 2.4.23-rc1 8192 8.95 97.0 9.23 42.71 50.7 84 15.09 14.0 108 7.64 78.7 9.7 28.63 13.0 220 579.1 2.33 24819 ----------------------Sequential--------------------- ------------------------ Random ----------------------- ----- Create ----- ----- Read ----- ----Delete ---- ----- Create ---- ----- Read ----- ---- Delete ---- files /sec %CPU Eff /sec %CPU Eff /sec %CPU Eff /sec %CPU Eff /sec %CPU Eff /sec %CPU Eff 2.4.18 65536 127 99.0 128 na na na 29074 97.0 2997 127 99.0 128 na na na 488 96.0 508 2.4.19 65536 126 99.0 127 na na na 30095 96.7 3113 129 99.0 130 na na na 490 96.0 511 2.4.20-rc1 65536 124 99.0 125 na na na 28556 99.7 2865 130 99.0 131 na na na 483 96.0 503 2.4.21-rc6-ac1 65536 121 94.7 128 na na na 26040 94.7 2750 121 95.0 128 na na na 450 89.3 504 2.4.21-pre4-ac3 65536 129 99.0 130 na na na 27719 97.7 2838 127 99.0 129 na na na 475 96.0 494 2.4.22aa1 65536 119 94.7 125 na na na 27655 95.0 2911 123 95.0 129 na na na 443 90.7 488 2.4.23-rc1 65536 124 94.7 131 na na na 26297 100.0 2629 121 95.0 128 na na na 442 89.0 497 is there any reasonable explication ? -thanks- _______________________________________________ Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
