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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@7844 d57e44dd-8a1f-0410-8b47-8ef2f437770f
72 lines
3.6 KiB
Plaintext
72 lines
3.6 KiB
Plaintext
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 E8400 @ 3.00 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 2.6.34.10
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* fio version fio-1.59-2-g5efce23
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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=255.
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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 Core i5-2400 @ 3.10 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=f).
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Target system software:
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* 2.6.34.10 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 3883 built in performance mode (make 2perf) and with
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SCST_MAX_TGT_DEV_COMMANDS equal to 64.
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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 srp_max_req_size=4200.
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* A 1 GB file residing on a tmpfs filesystem was exported towards the
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initiator system. From scst.conf:
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HANDLER vdisk_fileio {
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DEVICE disk01 {
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filename /dev/vdisk
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nv_cache 1
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threads_num 1
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}
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}
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Measurement results
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===================
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Numer of read IOPS reported by fio with block size 4 KB and I/O depth 32:
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197000
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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 0.568 0.573 0.572 1793.371 6.800 28.021 0.373 0.372 0.372 2750.228 3.479 42.972
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33554432 0.553 0.570 0.563 1822.346 22.683 56.948 0.374 0.374 0.373 2740.415 3.460 85.638
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16777216 0.552 0.554 0.552 1852.840 3.157 115.803 0.387 0.384 0.384 2659.776 9.745 166.236
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8388608 0.525 0.526 0.525 1949.240 1.748 243.655 0.411 0.409 0.410 2497.571 4.974 312.196
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4194304 0.542 0.540 0.541 1892.795 2.857 473.199 0.433 0.437 0.428 2366.890 20.165 591.722
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2097152 0.611 0.610 0.612 1675.944 2.240 837.972 0.517 0.512 0.511 1994.857 10.167 997.429
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1048576 0.678 0.691 0.684 1496.437 11.609 1496.437 0.588 0.597 0.586 1734.727 13.989 1734.727
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524288 0.946 0.941 0.947 1083.989 3.017 2167.977 0.808 0.784 0.788 1290.981 16.943 2581.961
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262144 1.102 1.167 1.152 898.524 22.201 3594.096 0.968 0.964 0.970 1058.587 2.732 4234.349
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131072 1.289 1.239 1.249 813.581 13.820 6508.648 1.076 1.074 1.071 953.745 1.826 7629.957
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65536 1.599 1.604 1.608 638.540 1.466 10216.641 1.389 1.396 1.405 733.190 3.436 11731.045
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32768 2.300 2.319 2.309 443.423 1.490 14189.537 1.976 2.004 1.967 516.595 4.088 16531.055
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16384 3.780 3.777 3.788 270.780 0.332 17329.951 3.210 3.086 3.050 328.854 7.147 21046.655
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8192 6.800 6.406 6.560 155.512 3.804 19905.533 5.409 5.250 5.272 192.865 2.533 24686.738
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4096 12.368 12.240 11.924 84.111 1.298 21532.302 9.561 9.847 9.559 106.072 1.472 27154.518
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