I've trimmed pg log on all OSDs and whoops (!) latency came from 100ms to 20ms! But based on the other cluster I think it should come to around 7ms. Is there anything related to pg log or other things that can help to continue debugging? On Thu, Jul 15, 2021 at 3:13 PM Seena Fallah <seenafallah@xxxxxxxxx> wrote: > Hi, > > I'm facing something strange in ceph (v12.2.13, filestore). I have two > clusters with the same config (kernel, network, disks, ...). One of them > has 3ms latency the other has 100ms latency. Both physical disk latency on > write is less than 1ms. > In the cluster with 100ms latency on write when I create another pool with > the same configs (crush rule, replica, ...) and test the latency, it would > like my another cluster. So it seems there is a problem in one of my pools! > The pool has 8212 PGs and each PG is around 12GB with 844 objects. Also, I > have many removed_snaps in this pool and I don't know if it impacts > performance or not? > > Do you have any idea what is wrong with my pool? Is there any way to debug > this problem? > > Thanks. > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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