Hi, I have spent some time on using LTTng tracepoints in order to determine the contributions to the latency for individual write requests. I have attached a table which shows the time spent in various functions of the ceph-osd daemon for a write request to the primary osd; I was using unmodified ceph-v0.86. On the client side, I was using fio on rbd with - libaio and iodepth of 16 - random write - 4 kByte requests Maybe this is of interest. Regards Andreas On Tue, 04 Nov 2014 09:49:15 -0600 Mark Nelson <mark.nelson@xxxxxxxxxxx> wrote: > Hi All, > > Got the date wrong the first time. 11/5/2014 is correct! 8AM PST as > usual. We are going to try a little experiment and leave the Agenda > blank for you guys to fill in. If you are planning on attending and > have something you want to discuss, please add it! > > We've also added a projects and backlog section at the top of the > etherpad for on-going efforts and the folks that are working on them. > For any projects or names of people we've missed, please update! > > Here's the links: > > Etherpad URL: > http://pad.ceph.com/p/performance_weekly > > To join the Meeting: > https://bluejeans.com/268261044 > > To join via Browser: > https://bluejeans.com/268261044/browser > > To join with Lync: > https://bluejeans.com/268261044/lync > > > To join via Room System: > Video Conferencing System: bjn.vc -or- 199.48.152.152 > Meeting ID: 268261044 > > To join via Phone: > 1) Dial: > +1 408 740 7256 > +1 888 240 2560(US Toll Free) > +1 408 317 9253(Alternate Number) > (see all numbers - http://bluejeans.com/numbers) > 2) Enter Conference ID: 268261044 > > Mark > -- > 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 > > -- Andreas Bluemle mailto:Andreas.Bluemle@xxxxxxxxxxx Heinrich Boell Strasse 88 Phone: (+49) 89 4317582 D-81829 Muenchen (Germany) Mobil: (+49) 177 522 0151
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