Could you share the fio command and your read_ahead_kb setting for the OSD devices ? "performance is better" is a little too general. I understand that we usually mean higher IOPS or higher aggregate throughput when we say performance is better. However, application random read performance "generally" implies an interest in lower latency - which of course is much more involved from a testing perspective.
Cheers Wade On Tue, Feb 2, 2016 at 7:28 AM min fang <louisfang2...@gmail.com> wrote: > Hi, I did a fio testing on my ceph cluster, and found ceph random read > performance is better than sequential read. Is it true in your stand? > > Thanks. > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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