More important than being able to push those settings or further is probably the ability to actually split your subfolders. I've been using variants of this [1] script I created a while back to take care of that.
To answer your question, we do run with much larger settings than you're using. 128/-16. The negative prevents subfolder merging while still allowing the value to be used for calculations the splitting number. Take a look at the script. It stops the osds, aggressively sets the subfolder settings, splits the subfolders to that setting, puts your settings back, and starts your osds. I do this about once a month for our use case of growing data. [1] https://gist.github.com/drakonstein/cb76c7696e65522ab0e699b7ea1ab1c4 On Wed, Aug 22, 2018, 7:37 AM Rafael Lopez <rafael.lo...@monash.edu> wrote: > Hi all, > > For those still using filestore and running clusters with a large number > of objects, I am seeking some thoughts on increasing the filestore split > settings. Currently we have: > > filestore merge threshold = 70 > filestore split multiple = 20 > > Has anyone gone higher than this? > > We are hitting the threshold of 22400 files per dir on osds for a > particular pool and experiencing slow reqs, and other osd badness as a > result. I am wondering if we can simply increase these values to push the > files per dir threshold and delay splitting without major consequences, eg. > to 80/30. This would probably buy us enough time to move to bluestore. > > -- > *Rafael Lopez* > Research Devops Engineer > Monash University eResearch Centre > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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