Hi, Lionel Bouton wrote : > Sorry this wasn't clear: I tried the ioprio settings before disabling > the deep scrubs and it didn't seem to make a difference when deep scrubs > occured. I have never tested these parameters (osd_disk_thread_ioprio_priority and osd_disk_thread_ioprio_class), but did you check that the I/O scheduler of the disks is cfq? Because, if I understand well, these parameters have no effect if the I/O scheduler is no cfq and, for instance, in Ubuntu 14.04 the I/O scheduler is deadline by default (not cfq). By the way, even if I don't use these parameters, should I use cfq I/O scheduler instead of deadline? Is there a best I/O scheduler for Ceph? -- François Lafont _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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