Hello Kris, On Wed, 18 May 2016 19:31:49 -0700 Kris Jurka wrote: > > > On 5/18/2016 7:15 PM, Christian Balzer wrote: > > >> We have hit the following issues: > >> > >> - Filestore merge splits occur at ~40 MObjects with default > >> settings. This is a really, really bad couple of days while things > >> settle. > > > > Could you elaborate on that? > > As in which settings affect this and what happens exactly as "merge > > splits" sounds like an oxymoron, so I suppose it's more of a split > > than a merge to be so painful? > > > > Filestore merges directories when the leafs are largely empty and splits > when they're full. So they're sort of the same thing. Here's the > result of a test I ran storing objects into RGW as fast as possible and > you can see performance tank while directories split and recover > afterwards. > Yes, I was aware of that, it sounded like something else to me. I guess 40MObjects bit threw me off, which obviously is something specific to Brain's cluster (size). > http://thread.gmane.org/gmane.comp.file-systems.ceph.user/27189/focus=27213 > Yup, remember that. And the conclusion that it's unlikely to see some loving as BlueStore will fix this. Christian -- Christian Balzer Network/Systems Engineer chibi@xxxxxxx Global OnLine Japan/Rakuten Communications http://www.gol.com/ _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
 |