Thanks Haomai, I will try this branch out. BTW, will it be compatible with the client which is not using this async messenger for example krbd ? Regards Somnath -----Original Message----- From: Haomai Wang [mailto:haomaiwang@xxxxxxxxx] Sent: Wednesday, October 22, 2014 10:02 AM To: Somnath Roy Cc: ceph-devel@xxxxxxxxxxxxxxx Subject: Re: The Async messenger benchmark with latest master ms_type = async is needed to add [global] section in ceph.conf No other options are needed On Thu, Oct 23, 2014 at 12:02 AM, Somnath Roy <Somnath.Roy@xxxxxxxxxxx> wrote: > Hi Haomai/Sage, > > I just figured it out that Async messenger is not yet in master. So, I > didn't really test the async messenger :-( > > I saw here is the pull request. > > https://github.com/ceph/ceph/pull/2768 > > I want to test this out and I have some questions regarding this. > > 1. The branch I should test out is the following, right ? > > https://github.com/ceph/ceph/tree/wip-msgr > > 2. Will Async messenger by default enabled ? OR I need to add some config option for that ? > > 3. Other than ms_event_op_threads , is there any tunable parameter I should be playing with ? > > Thanks & Regards > Somnath > > -----Original Message----- > From: Haomai Wang [mailto:haomaiwang@xxxxxxxxx] > Sent: Saturday, October 18, 2014 10:15 PM > To: Somnath Roy > Cc: ceph-devel@xxxxxxxxxxxxxxx > Subject: Re: The Async messenger benchmark with latest master > > Thanks Somnath! > > I have another simple performance test for async messenger: > > For 4k object read, master branch used 4.46s to complete tests, async Messenger used 3.14s For 4k object write, master branch used 10.6s to complete, async Messenger used 6.6s!! > > Detailf results see below, 4k object read is a simple ceph client > program which will read 5000 objects and 4k object write will write > 5000 objects. > I increased "ms_event_op_threads" to 10 compared to the default value is 2. > Maybe Somnath can do it and tests again, I think we can get more improvements for your tests. > > Master Branch(6fa686c8c42937dd069591f16de92e954d8ed34d): > > [root@ceph-test src]# for i in `seq 1 3`; do date && > ~/08.rados_read_4k_for_each_object /etc/ceph/ceph.conf rbd 5000 && > sleep 3; done > > Fri Oct 17 17:10:39 UTC 2014 > > Used Time:4.461581 > > Fri Oct 17 17:10:44 UTC 2014 > > Used Time:4.388572 > > Fri Oct 17 17:10:48 UTC 2014 > > Used Time:4.448157 > > [root@ceph-test src]# > > [root@ceph-test src]# for i in `seq 1 3`; do date && > ~/01.rados_write_4k_for_each_object /etc/ceph/ceph.conf rbd 5000 && > sleep 3; doneFri Oct 17 17:11:23 UTC 2014 > > Used Time:10.638783 > > Fri Oct 17 17:11:33 UTC 2014 > > Used Time:10.793231 > > Fri Oct 17 17:11:44 UTC 2014 > > Used Time:10.908003 > > > Master Branch with AsyncMessenger: > > [root@ceph-test src]# for i in `seq 1 3`; do date && > ~/08.rados_read_4k_for_each_object /etc/ceph/ceph.conf rbd 5000 && > sleep 3; done > > Sun Oct 19 06:01:50 UTC 2014 > > Used Time:3.155506 > > Sun Oct 19 06:01:53 UTC 2014 > > Used Time:3.134961 > > Sun Oct 19 06:01:56 UTC 2014 > > Used Time:3.135814 > > [root@ceph-test src]# for i in `seq 1 3`; do date && > ~/01.rados_write_4k_for_each_object /etc/ceph/ceph.conf rbd 5000 && > sleep 3; done > > Sun Oct 19 06:02:03 UTC 2014 > > Used Time:6.536319 > > Sun Oct 19 06:02:10 UTC 2014 > > Used Time:6.648738 > > Sun Oct 19 06:02:16 UTC 2014 > > Used Time:6.585156 > > On Sat, Oct 18, 2014 at 4:37 AM, Somnath Roy <Somnath.Roy@xxxxxxxxxxx> wrote: >> Hi Sage/Haomai, >> >> I did some 4K Random Read benchmarking with latest master having Async messenger changes and result looks promising. >> >> My configuration: >> --------------------- >> >> 1 node, 8 SSDs, 8OSDs, 3 pools , each has 3 images. ~2000 Pg cluster >> wide Cpu : Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz, dual socket, HT enabled, 40 cores. >> Used krbd as client. >> >> >> 1 clinet node with 3 rbd images on 3 different pools: >> ------------------------------------------------------------------- >> Master : >> --------- >> >> ~203k IOPS, ~90% latencies within 4msec, total read : ~5.2TB >> >> lat (usec) : 4=0.01%, 10=0.01%, 50=0.01%, 100=0.01%, 250=0.03% >> lat (usec) : 500=0.86%, 750=3.72%, 1000=7.19% >> lat (msec) : 2=39.17%, 4=41.45%, 10=7.26%, 20=0.24%, 50=0.06% >> lat (msec) : 100=0.03%, 250=0.01%, 500=0.01% >> >> cpu: ~1-2 % idle >> >> Giant: >> ------ >> >> ~196k IOPS, ~89-90% latencies within 4msec, total read : ~5.3TB >> >> lat (usec) : 250=0.01%, 500=0.51%, 750=2.71%, 1000=6.03% >> lat (msec) : 2=34.32%, 4=45.74%, 10=10.46%, 20=0.21%, 50=0.02% >> lat (msec) : 100=0.01%, 250=0.01% >> >> cpu: ~2% idle >> >> 2 clients with 3 rbd images each on 3 different pools: >> ------------------------------------------------------------------- >> >> Master : >> --------- >> >> ~207K iops, ~70% latencies within 4msec, Total read: ~5.99 TB >> >> lat (usec) : 250=0.03%, 500=0.63%, 750=2.67%, 1000=5.21% >> lat (msec) : 2=25.12%, 4=36.19%, 10=24.80%, 20=3.16%, 50=1.34% >> lat (msec) : 100=0.66%, 250=0.18%, 500=0.01% >> >> cpu: ~0-1 % idle >> >> Giant: >> -------- >> ~199K iops, ~64% latencies within 4msec, Total read: ~5.94 TB >> >> lat (usec) : 250=0.01%, 500=0.25%, 750=1.47%, 1000=3.45% >> lat (msec) : 2=21.22%, 4=36.69%, 10=30.63%, 20=4.28%, 50=1.70% >> lat (msec) : 100=0.28%, 250=0.02%, 500=0.01% >> >> cpu: ~1% idle >> >> >> So, in summary the master with Async messenger has improved both in iops and latency. >> >> Thanks & Regards >> Somnath >> >> ________________________________ >> >> PLEASE NOTE: The information contained in this electronic mail message is intended only for the use of the designated recipient(s) named above. 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