mirror of
https://github.com/ceph/ceph
synced 2024-12-25 12:54:16 +00:00
9885a78118
align with commit: d6f6ad03
PerfMsgr: Make Server worker threads configurable
Signed-off-by: Changcheng Liu <changcheng.liu@aliyun.com>
34 lines
1.5 KiB
ReStructuredText
34 lines
1.5 KiB
ReStructuredText
============================
|
|
Messenger notes
|
|
============================
|
|
|
|
Messenger is the Ceph network layer implementation. Currently Ceph supports
|
|
one messenger type: "async".
|
|
|
|
ceph_perf_msgr
|
|
==============
|
|
|
|
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 1 0
|
|
|
|
The first argument is ip:port pair which is telling the destination address the
|
|
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
|
|
|
|
The first argument is specified the server ip:port, and the second argument is
|
|
used to specify client threads. The third argument specify the concurrency(the
|
|
max inflight messages for each client thread), the fourth argument specify the
|
|
io numbers will be issued to server per client thread. The fifth argument is
|
|
used to indicate the "think time" for client thread when receiving messages,
|
|
this is also used to mock the client fast dispatch process. The last argument
|
|
specify the message data length to issue.
|