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@xxxxxxxxxxxxxxx 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
-- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
