f61b004197
Currently we have stat per bdev I/O channel, but for NVMe bdev multipath, we don't have stat per I/O path. Especially for active-active mode, we may want to observe each path's statistics. This patch support IO stat for nvme_io_path. Record each nvme_io_path stat using structure spdk_bdev_io_stat. The following is the comparison of bdevperf test. Test on Arm server with the following basic configuration. 1 Null bdev: block size: 4K, num_blocks:16k run bdevperf with io size=4k, qdepth=1/32/128, rw type=randwrite/mixed with 70% read/randread Each time run 30 seconds, each item run for 16 times and get the average. The result is as follows. qdepth type IOPS(default) IOPS(this patch) diff 1 randwrite 7795157.27 7859909.78 0.83% 1 mix(70% r) 7418607.08 7404026.54 -0.20% 1 randread 8053560.83 8046315.44 -0.09% 32 randwrite 15409191.3 15327642.11 -0.53% 32 mix(70% r) 13760145.97 13714666.28 -0.33% 32 randread 16136922.98 16038855.39 -0.61% 128 randwrite 14815647.56 14944902.74 0.87% 128 mix(70% r) 13414858.59 13412317.46 -0.02% 128 randread 15508642.43 15521752.41 0.08% Change-Id: I4eb5673f49d65d3ff9b930361d2f31ab0ccfa021 Signed-off-by: Richael Zhuang <richael.zhuang@arm.com> Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/14743 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com> Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com> |
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| rpc | ||
| sma | ||
| spdkcli | ||
| __init__.py | ||