Also, by running ceph osd perf, I see that fs_apply_latency is larger than fs_commit_latency. Shouldn't that be the opposite? Apply latency is afaik the time that it takes to to apply updates to the file system in page cache. Commitcycle latency is the time it takes to flush cache on disks, right? Again the statistics fetched from the sockets seem more reasonable, the commitcycle latency is substantially larger than apply latency, which seems normal to me. Is this a bug or a misunderstanding on my part? Regards, Kostis On 13 July 2015 at 13:27, Kostis Fardelas <dante1234@xxxxxxxxx> wrote: > Hello, > I noticed that commit/apply latency reported using: > ceph pg dump -f json-pretty > > is very different from the values reported when querying the OSD sockets. > What is your opinion? What are the targets the I should fetch metrics > from in order to be as precise as possible? _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
 |