On Wed, Jun 22, 2016 at 10:56 AM, Yoann Moulin <yoann.moulin@xxxxxxx> wrote: > Hello Florian, > >> On Tue, Jun 21, 2016 at 3:11 PM, Yoann Moulin <yoann.moulin@xxxxxxx> wrote: >>> Hello, >>> >>> I found a performance drop between kernel 3.13.0-88 (default kernel on Ubuntu >>> Trusty 14.04) and kernel 4.4.0.24.14 (default kernel on Ubuntu Xenial 16.04) >>> >>> ceph version is Jewel (10.2.2). >>> All tests have been done under Ubuntu 14.04 >> >> Knowing that you also have an internalis cluster on almost identical >> hardware, can you please let the list know whether you see the same >> behavior (severely reduced throughput on a 4.4 kernel, vs. 3.13) on >> that cluster as well? > > ceph version is infernalis (9.2.0) > > Ceph osd Benchmark: > > Kernel 3.13.0-88-generic : ceph tell osd.ID => average ~84MB/s > Kernel 4.2.0-38-generic : ceph tell osd.ID => average ~90MB/s > Kernel 4.4.0-24-generic : ceph tell osd.ID => average ~75MB/s > > The slow down is not as much as I have with Jewel but it is still present. But this is not on precisely identical hardware, is it? Cheers, Florian _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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