doc: set ceph_perf_msgr_server arguments

align with commit: d6f6ad03
PerfMsgr: Make Server worker threads configurable

Signed-off-by: Changcheng Liu <changcheng.liu@aliyun.com>

diff --git a/doc/dev/messenger.rst b/doc/dev/messenger.rst
index 9f313d2f178d9b8c2441b4b3eec6e36d87e2c6d4..7295389136ef5707b3968b451f9c9638e5bd8e91 100644 (file)
--- a/doc/dev/messenger.rst
+++ b/doc/dev/messenger.rst
@@ -12,14 +12,15 @@ ceph_perf_msgr is used to do benchmark for messenger module only and can help
 to find the bottleneck or time consuming within messenger moduleIt just like
 "iperf", we need to start server-side program firstly:
 
-# ./ceph_perf_msgr_server 172.16.30.181:10001 0
+# ./ceph_perf_msgr_server 172.16.30.181:10001 1 0
 
 The first argument is ip:port pair which is telling the destination address the
-client need to specified. The second argument tells the "think time" when
-dispatching messages. After Giant, CEPH_OSD_OP message which is the actual client
-read/write io request is fast dispatched without queueing to Dispatcher, in order
-to achieve better performance. So CEPH_OSD_OP message will be processed inline,
-"think time" is used by mock this "inline process" process.
+client need to specified. The second argument configures the server threads. The
+third argument tells the "think time"(us) when dispatching messages. After Giant,
+CEPH_OSD_OP message which is the actual client read/write io request is fast
+dispatched without queueing to Dispatcher, in order to achieve better performance.
+So CEPH_OSD_OP message will be processed inline, "think time" is used by mock
+this "inline process" process.
 
 # ./ceph_perf_msgr_client 172.16.30.181:10001 1 32 10000 10 4096