On 14/08/2019 10:44, Wido den Hollander wrote: > > > On 8/14/19 9:48 AM, Simon Oosthoek wrote: >> Is it a good idea to give the above commands or other commands to speed >> up the backfilling? (e.g. like increasing "osd max backfills") >> > > Yes, as right now the OSDs aren't doing that many backfills. You still > have a large queue of PGs which need to be backfilled. > > $ ceph tell osd.* config set osd_max_backfills 5 > > The default is that only one (1) backfills runs at the same time per > OSD. By setting it to 5 you speed up the process by increasing the > concurrency. This will however add load to the system and thus reduce > the available I/O for clients. > Currently the main user is the backfilling, so that's ok for now ;-) It seems to reduce the wait time by about 3-5 times, so this will help us make the changes we need. We can always reduce the max_backfills later when we have actual users on the system... Cheers /Simon _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
 |