Bump:). It would be helpful, if someone can share info related to debugging using counters/stats
On Sun, Oct 12, 2014 at 7:42 PM, Jakes John <[email protected]> wrote: > Hi All, > I would like to know if there are useful performance counters in > ceph which can help to debug the cluster. I have seen hundreds of stat > counters in various daemon dumps. Some of them are, > > 1. commit_latency_ms > 2. apply_latency_ms > 3. snap_trim_queue_len > 4. num_snap_trimming > > What do these indicate?. . > > I have used iostat, atop for cluster statistics but, none of them indicate > the internal ceph status. Machines might be new but, osds can still be > slow. If some of these counters can help to debug why certain osds are > bad( or can get bad later), it would be great. Some counters like total > processed requests, pending requests in queue, avg time taken to process a > request etc ? > > > Are there any docs for all performance counters which I can read?. I > couldn't find anything in ceph docs. > > Thanks >
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