I don't know if/why they're not documented, but we use them plus the scrub stride and iopriority options too: [osd] osd scrub sleep = .1 osd disk thread ioprio class = idle osd disk thread ioprio priority = 0 osd scrub chunk max = 5 osd deep scrub stride = 1048576 Cheers, Dan On Wed, Jun 10, 2015 at 8:38 AM, Paweł Sadowski <ceph@xxxxxxxxx> wrote: > Hello Everyone, > > There are some options[1] that greatly reduces deep-scrub performance > impact but they are not documented anywhere. Is there any reason for this? > > 1: > - osd_scrub_sleep > - osd_scrub_chunk_min > - osd_scrub_chunk_max > > > -- > PS > _______________________________________________ > 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