For me, the bottleneck is single-threaded operation. The recording will have more or less solved with the inclusion of rbd cache, but there are problems with reading. But I think that these problems can be solved cache pool, but have not tested. It follows that the more threads, the greater the speed of reading and writing. But in reality it is different. The speed and number of operations, depending on many factors, such as network latency. Examples testing, special attention to the charts: https://software.intel.com/en-us/blogs/2013/10/25/measure-ceph-rbd-performance-in-a-quantitative-way-part-i and https://software.intel.com/en-us/blogs/2013/11/20/measure-ceph-rbd-performance-in-a-quantitative-way-part-ii 2014-08-26 15:11 GMT+04:00 yuelongguang <fastsync at 163.com>: > > thanks Irek Fasikhov. > is it the only way to test ceph-rbd? and an important aim of the test is > to find where the bottleneck is. qemu/librbd/ceph. > could you share your test result with me? > > > > thanks > > > > > > > ? 2014-08-26 04:22:22?"Irek Fasikhov" <malmyzh at gmail.com> ??? > > Hi. > I and many people use fio. > For ceph rbd has a special engine: > https://telekomcloud.github.io/ceph/2014/02/26/ceph-performance-analysis_fio_rbd.html > > > 2014-08-26 12:15 GMT+04:00 yuelongguang <fastsync at 163.com>: > >> hi,all >> >> i am planning to do a test on ceph, include performance, throughput, >> scalability,availability. >> in order to get a full test result, i hope you all can give me some >> advice. meanwhile i can send the result to you,if you like. >> as for each category test( performance, throughput, >> scalability,availability) , do you have some some test idea and test >> tools? >> basicly i have know some tools to test throughtput,iops . but you can >> tell the tools you prefer and the result you expect. >> >> thanks very much >> >> >> >> >> _______________________________________________ >> ceph-users mailing list >> ceph-users at lists.ceph.com >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> >> > > > -- > ? ?????????, ??????? ???? ??????????? > ???.: +79229045757 > > > > -- ? ?????????, ??????? ???? ??????????? ???.: +79229045757 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20140826/d51c137d/attachment.htm>
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