Do you have statistics on the size of the OSDMaps or count of them which were being maintained by the OSDs? I'm not sure why having noout set would change that if all the nodes were alive, but that's my bet. -Greg On Thu, Oct 3, 2019 at 7:04 AM Vladimir Brik <vladimir.brik@xxxxxxxxxxxxxxxx> wrote: > > And, just as unexpectedly, things have returned to normal overnight > https://icecube.wisc.edu/~vbrik/graph-1.png > > The change seems to have coincided with the beginning of Rados Gateway > activity (before, it was essentially zero). I can see nothing in the > logs that would explain what happened though. > > Vlad > > > > On 10/2/19 3:43 PM, Vladimir Brik wrote: > > Hello > > > > I am running a Ceph 14.2.2 cluster and a few days ago, memory > > consumption of our OSDs started to unexpectedly grow on all 5 nodes, > > after being stable for about 6 months. > > > > Node memory consumption: https://icecube.wisc.edu/~vbrik/graph.png > > Average OSD resident size: https://icecube.wisc.edu/~vbrik/image.png > > > > I am not sure what changed to cause this. Cluster usage has been very > > light (typically <10 iops) during this period, and the number of objects > > stayed about the same. > > > > The only unusual occurrence was the reboot of one of the nodes the day > > before (a firmware update). For the reboot, I ran "ceph osd set noout", > > but forgot to unset it until several days later. Unsetting noout did not > > stop the increase in memory consumption. > > > > I don't see anything unusual in the logs. > > > > Our nodes have SSDs and HDDs. Resident set size of SSD ODSs is about > > 3.7GB. Resident set size of HDD OSDs varies from about 5GB to 12GB. I > > don't know why there is such a big spread. All HDDs are 10TB, 72-76% > > utilized, with 101-104 PGs. > > > > Does anybody know what might be the problem here and how to address or > > debug it? > > > > > > Thanks very much, > > > > Vlad > > _______________________________________________ > > ceph-users mailing list > > ceph-users@xxxxxxxxxxxxxx > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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