2 kingston V+100 500GB Soft RAID1 (md) ioscheduler [noop] ext3 Linux pro-cdn1 2.6.26-2-amd64 #1 SMP Tue Jan 25 05:59:43 UTC 2011 x86_64 GNU/Linux Filesystem Size Used Avail Use% Mounted on /dev/md4 452G 301G 128G 71% /home/ssd -------- Random 8KB read/write with 1% write ./pgiosim -w1 -a1 -v -b 1000000 /home/ssd/big.1 Write Mode: 1% Stallcheck at 1.000000 Verbose Unknown units of blocks Arg: 1 Read 1000000 blocks Added /home/ssd/big.1 ------- 3.20%, 32036 read, 300 written, 25625.08kB/sec 3203.14 iops 5.33%, 21283 read, 198 written, 17026.31kB/sec 2128.29 iops 7.47%, 21356 read, 245 written, 17084.73kB/sec 2135.59 iops 9.62%, 21511 read, 234 written, 17208.72kB/sec 2151.09 iops 11.78%, 21591 read, 216 written, 17271.71kB/sec 2158.96 iops 14.08%, 23032 read, 245 written, 18425.52kB/sec 2303.19 iops 16.53%, 24527 read, 228 written, 19621.52kB/sec 2452.69 iops 18.89%, 23535 read, 225 written, 18827.91kB/sec 2353.49 iops 21.19%, 23003 read, 229 written, 18402.34kB/sec 2300.29 iops 23.40%, 22139 read, 211 written, 17711.13kB/sec 2213.89 iops 25.66%, 22628 read, 225 written, 18102.33kB/sec 2262.79 iops 27.86%, 21983 read, 238 written, 17586.32kB/sec 2198.29 iops 30.14%, 22823 read, 211 written, 18258.31kB/sec 2282.29 iops 32.44%, 22975 read, 240 written, 18379.92kB/sec 2297.49 iops 34.83%, 23870 read, 214 written, 19095.92kB/sec 2386.99 iops 37.24%, 24129 read, 213 written, 19303.10kB/sec 2412.89 iops 39.49%, 22450 read, 210 written, 17959.92kB/sec 2244.99 iops 41.77%, 22827 read, 235 written, 18261.53kB/sec 2282.69 iops 43.98%, 22138 read, 218 written, 17710.30kB/sec 2213.79 iops 46.31%, 23293 read, 241 written, 18634.30kB/sec 2329.29 iops 48.86%, 25422 read, 258 written, 20337.52kB/sec 2542.19 iops 51.06%, 22091 read, 222 written, 17672.72kB/sec 2209.09 iops 53.46%, 23970 read, 215 written, 19175.93kB/sec 2396.99 iops 55.80%, 23359 read, 224 written, 18687.12kB/sec 2335.89 iops 58.04%, 22472 read, 232 written, 17977.24kB/sec 2247.16 iops 60.34%, 22981 read, 230 written, 18384.72kB/sec 2298.09 iops 62.17%, 18228 read, 192 written, 14580.33kB/sec 1822.54 iops 64.60%, 24336 read, 229 written, 19465.85kB/sec 2433.23 iops 66.89%, 22912 read, 210 written, 18329.52kB/sec 2291.19 iops 69.06%, 21677 read, 231 written, 17341.54kB/sec 2167.69 iops 71.28%, 22255 read, 210 written, 17803.91kB/sec 2225.49 iops 73.68%, 23928 read, 243 written, 19142.30kB/sec 2392.79 iops 75.90%, 22255 read, 205 written, 17803.93kB/sec 2225.49 iops 78.17%, 22641 read, 233 written, 18112.72kB/sec 2264.09 iops 80.50%, 23328 read, 235 written, 18662.29kB/sec 2332.79 iops 82.84%, 23379 read, 230 written, 18703.11kB/sec 2337.89 iops 84.90%, 20670 read, 236 written, 16535.95kB/sec 2066.99 iops 86.91%, 20018 read, 222 written, 16012.14kB/sec 2001.52 iops 89.24%, 23321 read, 235 written, 18654.39kB/sec 2331.80 iops 91.56%, 23224 read, 227 written, 18579.13kB/sec 2322.39 iops 94.05%, 24880 read, 262 written, 19903.93kB/sec 2487.99 iops 96.40%, 23549 read, 205 written, 18839.14kB/sec 2354.89 iops 98.80%, 23956 read, 230 written, 19164.73kB/sec 2395.59 iops ------ ./pgiosim -w10 -a1 -v -b 1000000 /home/ssd/big.1 Write Mode: 10% Stallcheck at 1.000000 Verbose Unknown units of blocks Arg: 1 Read 1000000 blocks Added /home/ssd/big.1 1.62%, 16226 read, 1642 written, 12979.00kB/sec 1622.37 iops 1.67%, 433 read, 38 written, 346.40kB/sec 43.30 iops 2.95%, 12839 read, 1282 written, 10271.06kB/sec 1283.88 iops 2.95%, 3 read, 0 written, 2.40kB/sec 0.30 iops 3.50%, 5500 read, 548 written, 4399.83kB/sec 549.98 iops 4.95%, 14524 read, 1468 written, 11619.12kB/sec 1452.39 iops 4.95%, 3 read, 1 written, 2.40kB/sec 0.30 iops 4.95%, 8 read, 0 written, 6.40kB/sec 0.80 iops 6.20%, 12471 read, 1241 written, 9976.67kB/sec 1247.08 iops 6.20%, 3 read, 0 written, 2.40kB/sec 0.30 iops 7.63%, 14272 read, 1445 written, 11417.26kB/sec 1427.16 iops 7.63%, 3 read, 0 written, 2.40kB/sec 0.30 iops 7.65%, 263 read, 22 written, 210.40kB/sec 26.30 iops 8.65%, 9930 read, 990 written, 7943.83kB/sec 992.98 iops 8.67%, 268 read, 24 written, 214.40kB/sec 26.80 iops 9.30%, 6296 read, 621 written, 5036.78kB/sec 629.60 iops 9.83%, 5233 read, 541 written, 4186.35kB/sec 523.29 iops 10.75%, 9222 read, 960 written, 7377.56kB/sec 922.20 iops 10.80%, 506 read, 52 written, 404.80kB/sec 50.60 iops 11.74%, 9417 read, 933 written, 7533.53kB/sec 941.69 iops 11.77%, 314 read, 29 written, 251.20kB/sec 31.40 iops 12.56%, 7906 read, 793 written, 6324.78kB/sec 790.60 iops 13.37%, 8052 read, 830 written, 6441.52kB/sec 805.19 iops 13.40%, 309 read, 29 written, 247.20kB/sec 30.90 iops 14.01%, 6116 read, 635 written, 4892.73kB/sec 611.59 iops 14.71%, 6994 read, 675 written, 5595.18kB/sec 699.40 iops 15.83%, 11205 read, 1188 written, 8953.19kB/sec 1119.15 iops 15.90%, 651 read, 68 written, 520.80kB/sec 65.10 iops 16.33%, 4355 read, 490 written, 3480.77kB/sec 435.10 iops 17.14%, 8098 read, 777 written, 6478.33kB/sec 809.79 iops 17.14%, 6 read, 0 written, 4.80kB/sec 0.60 iops 18.70%, 15603 read, 1622 written, 12482.33kB/sec 1560.29 iops 18.70%, 4 read, 0 written, 3.20kB/sec 0.40 iops 18.71%, 34 read, 5 written, 27.20kB/sec 3.40 iops 19.29%, 5829 read, 595 written, 4663.08kB/sec 582.89 iops 20.81%, 15209 read, 1477 written, 12167.16kB/sec 1520.90 iops 20.81%, 3 read, 0 written, 2.40kB/sec 0.30 iops 20.82%, 61 read, 8 written, 48.80kB/sec 6.10 iops 21.98%, 11665 read, 1144 written, 9331.42kB/sec 1166.43 iops 21.98%, 2 read, 0 written, 1.60kB/sec 0.20 iops 22.78%, 7988 read, 817 written, 6389.86kB/sec 798.73 iops 23.12%, 3364 read, 346 written, 2690.97kB/sec 336.37 iops 23.49%, 3746 read, 357 written, 2996.69kB/sec 374.59 iops 24.67%, 11720 read, 1137 written, 9375.97kB/sec 1172.00 iops 24.67%, 4 read, 0 written, 3.20kB/sec 0.40 iops 25.50%, 8365 read, 808 written, 6691.96kB/sec 836.49 iops 25.69%, 1865 read, 190 written, 1491.33kB/sec 186.42 iops 26.14%, 4462 read, 424 written, 3569.58kB/sec 446.20 iops 27.07%, 9377 read, 928 written, 7494.42kB/sec 936.80 iops 27.58%, 5103 read, 532 written, 4082.37kB/sec 510.30 iops 28.54%, 9537 read, 918 written, 7619.92kB/sec 952.49 iops 28.70%, 1600 read, 151 written, 1279.99kB/sec 160.00 iops 29.99%, 12901 read, 1247 written, 10307.61kB/sec 1288.45 iops 30.12%, 1339 read, 139 written, 1071.19kB/sec 133.90 iops 30.16%, 421 read, 41 written, 336.75kB/sec 42.09 iops 30.60%, 4368 read, 486 written, 3494.38kB/sec 436.80 iops 32.16%, 15580 read, 1585 written, 12463.80kB/sec 1557.97 iops 32.16%, 2 read, 0 written, 1.60kB/sec 0.20 iops 32.19%, 330 read, 21 written, 263.97kB/sec 33.00 iops 32.92%, 7302 read, 748 written, 5841.50kB/sec 730.19 iops 33.95%, 10339 read, 1030 written, 8269.88kB/sec 1033.74 iops 33.96%, 4 read, 0 written, 3.20kB/sec 0.40 iops 34.32%, 3673 read, 374 written, 2938.35kB/sec 367.29 iops 35.66%, 13395 read, 1335 written, 10715.92kB/sec 1339.49 iops 35.66%, 9 read, 3 written, 7.20kB/sec 0.90 iops 36.05%, 3890 read, 389 written, 3111.96kB/sec 388.99 iops 37.19%, 11383 read, 1104 written, 9097.74kB/sec 1137.22 iops 37.19%, 2 read, 0 written, 1.60kB/sec 0.20 iops 38.62%, 14295 read, 1511 written, 11421.06kB/sec 1427.63 iops 38.62%, 6 read, 0 written, 4.80kB/sec 0.60 iops 38.62%, 2 read, 0 written, 1.60kB/sec 0.20 iops 39.20%, 5831 read, 579 written, 4664.78kB/sec 583.10 iops 40.25%, 10453 read, 1006 written, 8355.83kB/sec 1044.48 iops 40.25%, 2 read, 0 written, 1.60kB/sec 0.20 iops 41.72%, 14710 read, 1501 written, 11767.59kB/sec 1470.95 iops 41.72%, 4 read, 0 written, 3.20kB/sec 0.40 iops 41.72%, 2 read, 0 written, 1.60kB/sec 0.20 iops 42.87%, 11472 read, 1144 written, 9177.50kB/sec 1147.19 iops 42.87%, 5 read, 0 written, 4.00kB/sec 0.50 iops 44.08%, 12076 read, 1233 written, 9660.75kB/sec 1207.59 iops 44.08%, 4 read, 1 written, 3.20kB/sec 0.40 iops 44.45%, 3684 read, 364 written, 2947.17kB/sec 368.40 iops 45.71%, 12684 read, 1339 written, 10147.10kB/sec 1268.39 iops 45.71%, 4 read, 0 written, 3.20kB/sec 0.40 iops 46.00%, 2823 read, 284 written, 2256.73kB/sec 282.09 iops 46.41%, 4116 read, 423 written, 3292.78kB/sec 411.60 iops 47.54%, 11360 read, 1121 written, 9087.86kB/sec 1135.98 iops 47.59%, 451 read, 52 written, 360.75kB/sec 45.09 iops 48.25%, 6646 read, 680 written, 5316.07kB/sec 664.51 iops 49.53%, 12717 read, 1281 written, 10173.34kB/sec 1271.67 iops 49.53%, 4 read, 0 written, 3.20kB/sec 0.40 iops 49.84%, 3107 read, 311 written, 2484.65kB/sec 310.58 iops 50.81%, 9737 read, 961 written, 7789.56kB/sec 973.69 iops 50.81%, 4 read, 1 written, 3.20kB/sec 0.40 iops 51.69%, 8811 read, 934 written, 7047.89kB/sec 880.99 iops 51.82%, 1281 read, 129 written, 1024.53kB/sec 128.07 iops 52.89%, 10674 read, 1034 written, 8539.07kB/sec 1067.38 iops 52.89%, 14 read, 3 written, 11.20kB/sec 1.40 iops 53.41%, 5235 read, 532 written, 4187.99kB/sec 523.50 iops 54.08%, 6711 read, 679 written, 5368.75kB/sec 671.09 iops 54.94%, 8535 read, 878 written, 6827.91kB/sec 853.49 iops 54.94%, 4 read, 0 written, 3.20kB/sec 0.40 iops 55.65%, 7086 read, 682 written, 5668.57kB/sec 708.57 iops 57.23%, 15799 read, 1561 written, 12639.04kB/sec 1579.88 iops 57.23%, 2 read, 0 written, 1.60kB/sec 0.20 iops 57.23%, 4 read, 0 written, 3.20kB/sec 0.40 iops 57.83%, 6043 read, 615 written, 4833.90kB/sec 604.24 iops 59.43%, 16034 read, 1657 written, 12827.16kB/sec 1603.39 iops 59.43%, 5 read, 0 written, 4.00kB/sec 0.50 iops 59.44%, 8 read, 1 written, 6.40kB/sec 0.80 iops 60.81%, 13705 read, 1397 written, 10963.65kB/sec 1370.46 iops 60.81%, 4 read, 0 written, 3.20kB/sec 0.40 iops 60.84%, 377 read, 30 written, 301.55kB/sec 37.69 iops 61.58%, 7402 read, 760 written, 5921.57kB/sec 740.20 iops 62.26%, 6764 read, 679 written, 5411.12kB/sec 676.39 iops 63.18%, 9188 read, 870 written, 7346.94kB/sec 918.37 iops 63.77%, 5951 read, 554 written, 4760.63kB/sec 595.08 iops 63.77%, 5 read, 0 written, 4.00kB/sec 0.50 iops 64.71%, 9386 read, 973 written, 7508.68kB/sec 938.59 iops 64.71%, 4 read, 0 written, 3.20kB/sec 0.40 iops 65.87%, 11559 read, 1142 written, 9246.80kB/sec 1155.85 iops 65.91%, 406 read, 41 written, 324.79kB/sec 40.60 iops 67.53%, 16184 read, 1634 written, 12929.73kB/sec 1616.22 iops 67.53%, 3 read, 0 written, 2.40kB/sec 0.30 iops 67.53%, 3 read, 0 written, 2.40kB/sec 0.30 iops 68.66%, 11289 read, 1124 written, 9031.13kB/sec 1128.89 iops 68.66%, 3 read, 0 written, 2.40kB/sec 0.30 iops 70.12%, 14665 read, 1482 written, 11731.93kB/sec 1466.49 iops 70.13%, 6 read, 1 written, 4.80kB/sec 0.60 iops 70.17%, 489 read, 53 written, 391.20kB/sec 48.90 iops 70.61%, 4311 read, 438 written, 3448.77kB/sec 431.10 iops 72.32%, 17185 read, 1741 written, 13747.94kB/sec 1718.49 iops 72.32%, 4 read, 0 written, 3.20kB/sec 0.40 iops 72.32%, 1 read, 0 written, 0.80kB/sec 0.10 iops 72.97%, 6433 read, 653 written, 5141.42kB/sec 642.68 iops 73.55%, 5830 read, 584 written, 4663.93kB/sec 582.99 iops 74.72%, 11705 read, 1188 written, 9355.64kB/sec 1169.45 iops 74.72%, 1 read, 0 written, 0.80kB/sec 0.10 iops 75.18%, 4561 read, 388 written, 3643.86kB/sec 455.48 iops 75.50%, 3230 read, 292 written, 2583.90kB/sec 322.99 iops 76.88%, 13816 read, 1427 written, 11052.76kB/sec 1381.60 iops 76.88%, 3 read, 1 written, 2.40kB/sec 0.30 iops 77.86%, 9736 read, 1007 written, 7788.77kB/sec 973.60 iops 78.00%, 1424 read, 138 written, 1139.19kB/sec 142.40 iops 78.67%, 6737 read, 675 written, 5389.53kB/sec 673.69 iops 79.50%, 8296 read, 816 written, 6636.43kB/sec 829.55 iops 79.50%, 3 read, 0 written, 2.40kB/sec 0.30 iops 80.44%, 9361 read, 924 written, 7488.75kB/sec 936.09 iops 80.44%, 3 read, 0 written, 2.40kB/sec 0.30 iops 81.66%, 12259 read, 1217 written, 9807.12kB/sec 1225.89 iops 81.66%, 3 read, 1 written, 2.40kB/sec 0.30 iops 82.72%, 10554 read, 1106 written, 8441.93kB/sec 1055.24 iops 82.95%, 2329 read, 224 written, 1863.19kB/sec 232.90 iops 82.99%, 408 read, 39 written, 326.40kB/sec 40.80 iops 84.07%, 10723 read, 1090 written, 8578.37kB/sec 1072.30 iops 84.07%, 4 read, 0 written, 3.20kB/sec 0.40 iops 85.10%, 10379 read, 1028 written, 8303.15kB/sec 1037.89 iops 85.12%, 167 read, 14 written, 133.59kB/sec 16.70 iops 86.31%, 11925 read, 1117 written, 9539.95kB/sec 1192.49 iops 86.31%, 4 read, 1 written, 3.20kB/sec 0.40 iops 86.66%, 3452 read, 352 written, 2761.42kB/sec 345.18 iops 87.77%, 11113 read, 1088 written, 8890.26kB/sec 1111.28 iops 87.77%, 3 read, 1 written, 2.40kB/sec 0.30 iops 88.91%, 11434 read, 1081 written, 9147.12kB/sec 1143.39 iops 88.91%, 5 read, 0 written, 4.00kB/sec 0.50 iops 89.75%, 8341 read, 802 written, 6672.71kB/sec 834.09 iops 90.23%, 4835 read, 491 written, 3867.94kB/sec 483.49 iops 91.12%, 8910 read, 941 written, 7127.93kB/sec 890.99 iops 91.12%, 3 read, 0 written, 2.40kB/sec 0.30 iops 91.71%, 5909 read, 567 written, 4726.76kB/sec 590.85 iops 92.15%, 4316 read, 415 written, 3452.78kB/sec 431.60 iops 93.44%, 12960 read, 1299 written, 10367.83kB/sec 1295.98 iops 93.44%, 4 read, 0 written, 3.20kB/sec 0.40 iops 93.73%, 2857 read, 292 written, 2285.59kB/sec 285.70 iops 95.35%, 16170 read, 1658 written, 12935.95kB/sec 1616.99 iops 95.35%, 3 read, 0 written, 2.40kB/sec 0.30 iops 95.35%, 5 read, 0 written, 4.00kB/sec 0.50 iops 96.65%, 13060 read, 1274 written, 10447.89kB/sec 1305.99 iops 96.65%, 5 read, 0 written, 4.00kB/sec 0.50 iops 97.46%, 8065 read, 853 written, 6451.07kB/sec 806.38 iops 97.57%, 1158 read, 120 written, 926.40kB/sec 115.80 iops 98.70%, 11221 read, 1113 written, 8975.70kB/sec 1121.96 iops 98.70%, 42 read, 4 written, 33.60kB/sec 4.20 iops 99.85%, 11480 read, 1170 written, 9180.01kB/sec 1147.50 iops 99.85%, 2 read, 0 written, 1.60kB/sec 0.20 iops -- Laurent "ker2x" Laborde Sysadmin & DBA at http://www.over-blog.com/ -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
