From 7385cc61f20bfa4ff6af4b2d3e26be98172cecbc 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 4d18be7e8..e3cde9513 100644
--- a/examples/nvme/perf/perf.c
+++ b/examples/nvme/perf/perf.c
@@ -812,6 +812,7 @@ init_ns_worker_ctx(struct ns_worker_ctx *ns_ctx)
 		if (opts.io_queue_requests < ns_ctx->entry->num_io_requests) {
 			opts.io_queue_requests = ns_ctx->entry->num_io_requests;
 		}
+		opts.delay_pcie_doorbell = true;
 
 		ns_ctx->u.nvme.qpair = spdk_nvme_ctrlr_alloc_io_qpair(ns_ctx->entry->u.nvme.ctrlr, &opts,
 				       sizeof(opts));