Re: Weekly performance meeting

[Loic Dachary <loic@dachary.org>]

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Hi,

I added

  - isa : performances improvement expected ~20% [jian.zhang]

to http://pad.ceph.com/p/performance_weekly . Do you have more information about this degradation ?

Cheers

On 26/09/2014 10:37, Zhang, Jian wrote:
> Loic, 
> Sorry for the confusion. We have observed up to ~20% EC performance degradation and have some initial findings and want to have a discussion.  
> 
> Thanks
> Jian
> 
> 
> -----Original Message-----
> From: Loic Dachary [mailto:loic@dachary.org] 
> Sent: Friday, September 26, 2014 3:25 PM
> To: ceph-devel@vger.kernel.org; Zhang, Jian
> Subject: Re: Weekly performance meeting
> 
> Hi,
> 
> I added a section to http://pad.ceph.com/p/performance_weekly about the current efforts to optimize/benchmark erasure code plugins. @Zhang, Jian : the ISA erasure code plugin Andreas Peters worked on is not mentioned because it does not need any optimization, as far as I can tell ;-) 
> 
> Cheers
> 
> On 25/09/2014 20:27, Sage Weil wrote:
>> Hi everyone,
>>
>> A number of people have approached me about how to get more involved 
>> with the current work on improving performance and how to better 
>> coordinate with other interested parties.  A few meetings have taken 
>> place offline with good results but only a few interested parties were involved.
>>
>> Ideally, we'd like to move as much of this dicussion into the public
>> forums: ceph-devel@vger.kernel.org and #ceph-devel.  That isn't always 
>> sufficient, however.  I'd like to also set up a regular weekly meeting 
>> using google hangouts or bluejeans so that all interested parties can 
>> share progress.  There are a lot of things we can do during the Hammer 
>> cycle to improve things but it will require some coordination of effort.
>>
>> Among other things, we can discuss:
>>
>>  - observed performance limitations
>>  - high level strategies for addressing them
>>  - proposed patch sets and their performance impact
>>  - anything else that will move us forward
>>
>> One challenge is timezones: there are developers in the US, China, 
>> Europe, and Israel who may want to join.  As a starting point, how 
>> about next Wednesday, 15:00 UTC?  If I didn't do my tz math wrong, 
>> that's
>>
>>   8:00 (PDT, California)
>>  15:00 (UTC)
>>  18:00 (IDT, Israel)
>>  23:00 (CST, China)
>>
>> That is surely not the ideal time for everyone but it can hopefully be 
>> a starting point.
>>
>> I've also created an etherpad for collecting discussion/agenda items 
>> at
>>
>> 	http://pad.ceph.com/p/performance_weekly
>>
>> Is there interest here?  Please let everyone know if you are actively 
>> working in this area and/or would like to join, and update the pad 
>> above with the topics you would like to discuss.
>>
>> Thanks!
>> sage
>> --
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> 
> --
> Loïc Dachary, Artisan Logiciel Libre
> 
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-- 
Loïc Dachary, Artisan Logiciel Libre


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