On Wed, Jan 22, 2014 at 8:04 AM, Dan Ryder (daryder) <daryder@xxxxxxxxx> wrote: > > Hello, > > > > I am wondering if there is any detailed documentation for obtaining I/O statistics for a Ceph cluster. > > The important metrics I’m looking for are: the number of operations, size of operations, and latency of operations – by operations I’m referring to read/write. > > > > I’ve seen what look like the right statistics after running a “ceph --admin-daemon /var/run/ceph/ceph-osd.0.asok perf dump”, and looking under the “osd” section, but I would like to confirm what exactly these stats represent. > > > > If there is any documentation you could point me to, or any other pertinent information to offer it would be very helpful. Those are indeed performance statistics on various parts of the OSD pipeline, but I'm not aware of any documentation on them. I know we've described them in emails before though, so googling their names should find you what you're looking for. -Greg Software Engineer #42 @ http://inktank.com | http://ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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