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Added to repository.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1724 d57e44dd-8a1f-0410-8b47-8ef2f437770f
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Bart Van Assche
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Setup details
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=============
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Initiator system hardware:
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* IB HCA: QDR Mellanox ConnectX MT26428
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* CPU: Intel Core2 Duo E6750 @ 2.66 GHz.
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Initiator system hardware configuration:
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* CPU frequency scaling was disabled.
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* IRQ affinity for mlx4_core: not bound to a CPU core (smp_affinity=3).
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Initiator system software:
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* Kernel 2.6.34
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Initiator system software configuration:
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* Runlevel: 3.
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* SRP initiator was loaded with parameter srp_sg_tablesize=128.
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* SRP initiator block device I/O scheduler: noop.
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Target system hardware:
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* IB HCA: QDR Mellanox ConnectX MT26428
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* CPU: Intel Core2 Duo E8400 @ 3.00 GHz.
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Target system hardware configuration:
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* CPU frequency scaling was disabled.
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* IRQ affinity for mlx4-comp-0: not bound to a CPU core (smp_affinity=3).
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Target system software:
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* 2.6.34 kernel with SCST patches applied and with kernel debugging disabled.
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* Mainstream kernel InfiniBand drivers (no OFED).
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* SCST revision 1721 built in release mode (make debug2release) and
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with SCST_MAX_TGT_DEV_COMMANDS equal to 48.
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Target system software configuration:
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* Runlevel: 3.
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* ib_srpt kernel module was loaded with the parameter thread=0.
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* A 1 GB file residing on a tmpfs filesystem was exported towards the
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initiator system.
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Measurement results
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===================
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+ blockdev-perftest -f -d -s 30 -m 12 /dev/sdb
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blocksize W W W W(avg, W(std, W R R R R(avg, R(std, R
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(bytes) (s) (s) (s) MB/s) MB/s) (IOPS) (s) (s) (s) MB/s) MB/s) (IOPS)
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67108864 0.986 1.007 0.984 1031.838 10.783 16.122 0.359 0.359 0.359 2850.743 1.071 44.543
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33554432 1.101 1.114 1.112 923.379 4.761 28.856 0.502 0.502 0.503 2038.166 2.598 63.693
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16777216 1.216 1.226 1.204 842.682 6.055 52.668 0.623 0.622 0.622 1645.080 1.615 102.818
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8388608 1.146 1.152 1.149 891.503 1.876 111.438 0.648 0.646 0.648 1581.660 1.889 197.707
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4194304 1.050 1.066 1.060 967.383 6.281 241.846 0.703 0.770 0.709 1410.098 57.053 352.525
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2097152 1.060 1.066 1.059 964.409 2.948 482.205 0.717 0.716 0.715 1430.388 1.817 715.194
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1048576 1.262 1.273 1.272 807.054 3.075 807.054 0.872 0.873 0.868 1175.494 3.133 1175.494
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524288 1.484 1.483 1.487 689.674 0.692 1379.349 1.043 1.035 1.036 986.290 3.388 1972.580
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262144 1.625 1.628 1.629 629.392 0.652 2517.566 1.108 1.109 1.108 923.782 0.470 3695.129
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131072 1.757 1.762 1.757 582.342 0.738 4658.735 1.242 1.237 1.236 826.764 1.839 6614.112
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65536 2.174 2.186 2.184 469.419 1.133 7510.702 1.548 1.545 1.551 661.468 1.038 10583.481
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32768 2.922 2.916 2.906 351.314 0.823 11242.038 2.177 2.183 2.169 470.513 1.275 15056.420
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16384 4.381 4.473 4.353 232.643 2.688 14889.181 3.376 3.362 3.363 304.125 0.572 19464.030
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8192 7.364 7.458 7.333 138.664 0.990 17748.980 5.787 5.778 5.783 177.077 0.117 22665.794
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4096 13.005 13.063 12.938 78.758 0.308 20161.974 10.278 10.309 10.333 99.356 0.216 25435.107
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+ blockdev-perftest -f -a -s 30 -m 12 /dev/sdb
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blocksize W W W W(avg, W(std, W R R R R(avg, R(std, R
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(bytes) (s) (s) (s) MB/s) MB/s) (IOPS) (s) (s) (s) MB/s) MB/s) (IOPS)
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67108864 1.840 1.845 1.901 549.996 8.134 8.594 1.399 1.405 1.405 729.861 1.651 11.404
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33554432 1.824 1.913 1.834 551.753 11.648 17.242 1.402 1.401 1.404 730.210 0.678 22.819
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16777216 1.905 1.840 1.859 548.221 7.963 34.264 1.400 1.399 1.400 731.493 0.190 45.718
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8388608 1.838 1.861 1.857 552.961 2.937 69.120 1.390 1.393 1.387 736.590 1.285 92.074
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4194304 1.817 1.821 1.874 557.536 7.809 139.384 1.314 1.319 1.306 779.914 3.135 194.978
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2097152 1.601 1.625 1.595 637.189 5.130 318.594 1.212 1.226 1.217 840.336 3.927 420.168
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1048576 1.283 1.302 1.284 793.881 5.290 793.881 1.088 1.075 1.079 947.361 4.666 947.361
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524288 1.216 1.201 1.130 866.816 28.189 1733.632 1.052 1.039 1.042 980.319 5.174 1960.639
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262144 1.117 1.118 1.143 909.765 9.544 3639.061 1.040 1.038 1.038 986.136 0.777 3944.545
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131072 1.219 1.196 1.197 850.364 7.473 6802.915 1.044 1.038 1.038 984.683 2.730 7877.463
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65536 1.137 1.132 1.118 906.802 6.416 14508.826 1.039 1.040 1.041 984.600 0.777 15753.604
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32768 1.130 1.171 1.135 894.261 14.332 28616.358 1.054 1.045 1.059 972.685 5.233 31125.913
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16384 1.202 1.152 1.127 883.139 23.630 56520.877 1.056 1.052 1.054 971.575 1.233 62180.828
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8192 1.135 1.143 1.219 879.449 28.123 112569.536 1.059 1.064 1.061 964.576 1.912 123465.788
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4096 1.177 1.179 1.173 870.666 1.931 222890.547 1.097 1.092 1.095 935.370 1.489 239454.732
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+ blockdev-perftest -f -j -d -s 30 -m 12 /dev/sdb
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blocksize W W W W(avg, W(std, W R R R R(avg, R(std, R
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(bytes) (s) (s) (s) MB/s) MB/s) (IOPS) (s) (s) (s) MB/s) MB/s) (IOPS)
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67108864 0.459 0.454 0.456 2244.019 10.094 35.063 0.358 0.356 0.357 2868.362 6.560 44.818
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33554432 0.565 0.568 0.567 1807.068 3.981 56.471 0.495 0.495 0.494 2070.083 1.974 64.690
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16777216 0.716 0.717 0.716 1429.503 0.940 89.344 0.611 0.609 0.611 1677.776 2.595 104.861
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8388608 0.733 0.735 0.735 1394.464 1.792 174.308 0.632 0.635 0.635 1615.150 3.608 201.894
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4194304 0.755 0.767 0.756 1348.620 9.608 337.155 0.652 0.652 0.649 1572.972 3.422 393.243
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2097152 0.810 0.815 0.817 1258.002 4.557 629.001 0.688 0.689 0.687 1488.374 1.766 744.187
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1048576 0.940 0.964 0.936 1081.873 14.012 1081.873 0.811 0.824 0.818 1252.397 8.142 1252.397
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524288 1.214 1.218 1.222 840.729 2.254 1681.457 0.992 1.015 1.007 1019.336 9.706 2038.671
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262144 1.320 1.351 1.359 762.403 9.617 3049.613 1.084 1.092 1.111 934.690 9.615 3738.761
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131072 1.531 1.535 1.530 668.409 0.942 5347.269 1.259 1.254 1.254 815.506 1.529 6524.047
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65536 1.935 1.941 1.942 528.018 0.843 8448.285 1.622 1.624 1.621 631.190 0.485 10099.040
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32768 2.733 2.749 2.728 374.182 1.222 11973.819 2.280 2.256 2.265 451.707 1.970 14454.620
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16384 4.292 4.327 4.321 237.406 0.843 15194.009 3.600 3.572 3.579 285.744 0.947 18287.616
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8192 7.455 7.564 7.499 136.429 0.813 17462.917 6.244 6.180 6.182 165.112 0.788 21134.311
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4096 13.539 13.577 13.631 75.393 0.209 19300.515 11.060 11.142 11.065 92.345 0.312 23640.274
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+ blockdev-perftest -f -j -a -s 30 -m 12 /dev/sdb
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blocksize W W W W(avg, W(std, W R R R R(avg, R(std, R
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(bytes) (s) (s) (s) MB/s) MB/s) (IOPS) (s) (s) (s) MB/s) MB/s) (IOPS)
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67108864 1.330 1.327 1.323 771.863 1.669 12.060 1.243 1.250 1.247 821.395 1.890 12.834
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33554432 1.325 1.332 1.328 770.894 1.663 24.090 1.248 1.247 1.250 820.295 0.819 25.634
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16777216 1.324 1.332 1.324 771.866 2.190 48.242 1.247 1.246 1.245 821.830 0.539 51.364
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8388608 1.324 1.323 1.352 768.270 7.692 96.034 1.231 1.234 1.234 830.496 0.953 103.812
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4194304 1.314 1.329 1.328 773.629 4.017 193.407 1.151 1.140 1.143 894.598 3.621 223.650
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2097152 1.367 1.319 1.413 750.044 21.095 375.022 1.041 1.031 1.027 991.320 5.635 495.660
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1048576 1.276 1.290 1.294 795.884 4.790 795.884 0.907 0.895 0.895 1139.088 7.136 1139.088
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524288 1.137 1.131 1.134 903.002 1.951 1806.005 0.881 0.881 0.892 1157.538 6.757 2315.075
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262144 1.111 1.139 1.122 911.127 9.313 3644.510 0.884 0.880 0.880 1161.881 2.482 4647.525
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131072 1.060 1.076 1.119 944.271 21.443 7554.169 0.821 0.818 0.815 1251.845 3.749 10014.760
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65536 1.073 1.094 1.087 944.130 7.623 15106.083 0.826 0.828 0.825 1239.212 1.869 19827.395
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32768 1.114 1.125 1.131 911.609 5.725 29171.474 0.847 0.847 0.847 1208.973 0.000 38687.131
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16384 1.188 1.193 1.196 858.827 2.379 54964.917 0.881 0.882 0.881 1161.876 0.621 74360.082
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8192 1.327 1.400 1.413 742.598 20.737 95052.510 0.999 0.990 0.982 1034.046 7.247 132357.902
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4096 1.626 1.635 1.636 627.328 1.731 160595.871 1.179 1.181 1.185 866.576 1.828 221843.583
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