RE: The Async messenger benchmark with latest master

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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
>>
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>
>
> --
> Best Regards,
>
> Wheat



--
Best Regards,

Wheat
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