Re: Weekly performance meeting

[Mark Nelson <mark.nelson@inktank.com>]

Oops, replied to fast and meant to put Dieter! :)

Mark

On 09/25/2014 02:30 PM, Mark Nelson wrote:
> I'll be there too, and 100% agree with you Kasper! :)
>
> Mark
>
> On 09/25/2014 02:27 PM, Kasper Dieter wrote:
>> Hi Sage,
>>
>> I'm definitely interested in joining this weekly call starting Oct 1st.
>> Thanks for this initiative!
>>
>> Especially I'm interested in:
>> - how can we reduce the number of threads in the system
>>    -- including to avoid the context switches in between
>>    -- including to avoid the queues and locks in between
>> - how we can reduce the number of lines of code
>>    -- including the multiple system calls for each IO
>> - how we can introduce a high efficient timestamp collection of the
>> most important FN check-points
>>     (see for example the attached file)
>>     to measure the change and effect of our actions
>>
>> Best Regards,
>> -Dieter
>>
>>
>> On Thu, Sep 25, 2014 at 08:27:00PM +0200, 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
>