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numam-spdk/examples/nvme
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Alexey Marchuk 31a1b193a2 perf: Add check that io_size is a multiple of ns sector size 
It is possible to specify io_size which is not a multiple
of sector size and in that case real IO will have size
of g_io_size_bytes/sector_size. It is integer division, so
IO will be less than requested by the user. At the same
time performance statistics are reported using io_size
specified by the user (which is bigger than real IO size)
so we have wrong statistics (e.g. we can see BW higher
than NIC line rate).
To avoid this confusing situation, add a check that
user's io_size can be evenly divided by ns sector size.

Signed-off-by: Alexey Marchuk <alexeymar@mellanox.com>
Change-Id: Ie63b5b7b3d99b5c51c10ec09e084fd30d6cb33dd
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9733
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
2021-10-28 11:33:14 +00:00
..
abort test/nvme/abort: ensure admin queue is sized appropriately 2021-08-11 06:51:13 +00:00
arbitration examples: use "main" instead of "master" 2020-12-03 09:41:07 +00:00
cmb_copy examples/nvme/cmb_copy: exit the test tool if no controller found 2021-10-20 07:24:47 +00:00
fio_plugin nvme_fio: add log_flags 2021-10-14 08:17:28 +00:00
hello_world nvme: Add spdk_nvme_detach_poll() to simplify a common use case 2021-06-30 22:54:19 +00:00
hotplug nvme: separate admin timeout vs. io timeout 2021-07-14 09:15:20 +00:00
identify examples/nvme/identify: print Command Retry Delay Time if exist 2021-10-08 07:26:45 +00:00
nvme_manage nvme: Add spdk_nvme_detach_poll() to simplify a common use case 2021-06-30 22:54:19 +00:00
perf perf: Add check that io_size is a multiple of ns sector size 2021-10-28 11:33:14 +00:00
pmr_persistence nvme: Add spdk_nvme_detach_poll() to simplify a common use case 2021-06-30 22:54:19 +00:00
reconnect nvme: Add spdk_nvme_detach_poll() to simplify a common use case 2021-06-30 22:54:19 +00:00
Makefile examples/pmr_persistence: Add PMR example application 2021-04-22 20:10:21 +00:00