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example/perf: add more clear information on large queue depth

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Change-Id: I7e9166834c869077a66467b06b51084e1a945a99
Signed-off-by: GangCao <gang.cao@intel.com>
Reviewed-on: https://review.gerrithub.io/386198
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
GangCao 2017-11-07 18:37:08 -05:00 committed by Jim Harris
parent 4952f2540f
commit 0434d5d58f
1 changed files with 3 additions and 2 deletions
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5
examples/nvme/perf/perf.c
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@ -218,9 +218,10 @@ register_ns(struct spdk_nvme_ctrlr *ctrlr, struct spdk_nvme_ns *ns)
*/ */
entries = (g_io_size_bytes - 1) / max_xfer_size + 2; entries = (g_io_size_bytes - 1) / max_xfer_size + 2;
if ((g_queue_depth * entries) > opts.io_queue_size) { if ((g_queue_depth * entries) > opts.io_queue_size) {
printf("WARNING: controller IO queue size %u less than required\n", printf("controller IO queue size %u less than required\n",
opts.io_queue_size); opts.io_queue_size);
printf("You can try with smaller IO size or queue depth\n"); printf("configure an IO queue depth and IO size such that "
"the product is less than or equal to %u\n", opts.io_queue_size);
g_warn = true; g_warn = true;
return; return;
} }