Re: messenger performance regression

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Hi Yan,

Couple of days ago I implemented fio engine which tests bare messenger
performance: https://github.com/ceph/ceph/pull/24678

So you can give a try against different versions in order to get
precise measurements.

--
Roman


On 2018-10-24 12:17, Yan, Zheng wrote:
Only ceph complied in debug mode has the regression. Ceph complied in
release mode has no regression. Sorry for the noisy.

Yan, Zheng



On Wed, Oct 24, 2018 at 1:46 PM Yan, Zheng <ukernel@xxxxxxxxx> wrote:

Hi,

Yesterday I checked how fast ceph-mds can process requests (a client
keeps sending getattr request of root inode). Requests rate I got is
only about half of same test I did a few weeks ago. Perf profile of
ceph-mds shows that messenger functions used more CPU time compared to
mimic code. Performance result and perf profiles are at
http://tracker.ceph.com/issues/36561.

Regards
Yan, Zheng




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