On 10 Jun 2014, at 11:59, Dan Van Der Ster <daniel.vanders...@cern.ch> wrote:
> One idea I had was to check the behaviour under different disk io schedulers, > trying exploit thread io priorities with cfq. So I have a question for the > developers about using ionice or ioprio_set to lower the IO priorities of the > threads responsible for scrubbing: > - Are there dedicated threads always used for scrubbing only, and never for > client IOs? If so, can an admin identify the thread IDs so he can ionice > those? > - If OTOH a disk/op thread is switching between scrubbing and client IO > responsibilities, could Ceph use ioprio_set to change the io priorities on > the fly?? I just submitted a feature request for this: http://tracker.ceph.com/issues/8580 Cheers, Dan _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
