I believe splitting will happen on writes, merging I think only happens on deletions.
From: Paul Renner [mailto:renner...@gmail.com] Sent: 10 July 2016 19:40 To: n...@fisk.me.uk Cc: ceph-users@lists.ceph.com Subject: Re: [ceph-users] Filestore merge and split Thanks... Do you know when splitting or merging will happen? Is it enough that a directory is read, eg. through scrub? If possible I would like to initiate the process Regards Paul On Sun, Jul 10, 2016 at 10:47 AM, Nick Fisk <n...@fisk.me.uk <mailto:n...@fisk.me.uk> > wrote: You need to set the option in the ceph.conf and restart the OSD I think. But it will only take effect when splitting or merging in the future, it won't adjust the current folder layout. > -----Original Message----- > From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com > <mailto:ceph-users-boun...@lists.ceph.com> ] On Behalf Of Paul Renner > Sent: 09 July 2016 22:18 > To: ceph-users@lists.ceph.com <mailto:ceph-users@lists.ceph.com> > Subject: [ceph-users] Filestore merge and split > > Hello cephers > we have many (millions, small objects in our RadosGW system and are getting > not very good write performance, 100-200 PUTs /sec. > > I have read on the mailinglist that one possible tuning option would be to > increase the max. number of files per directory on OSDs with > eg. > > filestore merge threshold = 40 > filestore split multiple = 8 > Now my question is, do we need to rebuild the OSDs to make this effective? Or > is it a runtime setting? > I'm asking because when setting this with injectargs I get the message > "unchangeable" back. > Thanks for any insight.
_______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
