It depends on store backend. Bluestore has it's own scheduler which works properly only with CFQ, while filestore configuration is narrowed to setting OSD IO threads' scheduling class and priority just like using 'ionice' utility. > On 5.11.2018, at 21:45, Bastiaan Visser <bvisser@xxxxxxxxxx> wrote: > > > There are lots of rumors around about the benefit of changing io-schedulers for OSD disks. > Even some benchmarks can be found, but they are all more than a few years old. > Since ceph is moving forward with quite a pace, i am wondering what the common practice is to use as io-scheduler on OSD's. > > And since blk-mq is around these days, are the multi-queue schedules already being used in production clusters? > > Regards, > Bastiaan > _______________________________________________ > 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
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