From f80368bbced459886e5b8f7b4fe38bb6970ab888 Mon Sep 17 00:00:00 2001
From: Ben Walker <benjamin.walker@intel.com>
Date: Mon, 11 Mar 2019 14:00:17 -0700
Subject: [PATCH] nvme/perf: Use delay_doorbell queue pair option

This tool continually polls for completions, so it
is safe to turn this on.

Change-Id: Ice1c68cdaff070f8edd428621e19a6fb44fb8c31
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/447712
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
---
 examples/nvme/perf/perf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/examples/nvme/perf/perf.c b/examples/nvme/perf/perf.c
index 972d148f4..4a74d0478 100644
--- a/examples/nvme/perf/perf.c
+++ b/examples/nvme/perf/perf.c
@@ -567,6 +567,7 @@ nvme_init_ns_worker_ctx(struct ns_worker_ctx *ns_ctx)
 	if (opts.io_queue_requests < entry->num_io_requests) {
 		opts.io_queue_requests = entry->num_io_requests;
 	}
+	opts.delay_pcie_doorbell = true;
 
 	ns_ctx->u.nvme.qpair = spdk_nvme_ctrlr_alloc_io_qpair(entry->u.nvme.ctrlr, &opts,
 			       sizeof(opts));