Hi, After some testing, it looks like when the deep scrubbing is running, the performance is greatly affected. Even when only 1 active deep scrubbing is running. After some googling, suggestion to enable the kernel CFQ scheduler. https://ceph.com/geen-categorie/lowering-ceph-scrub-io-priority/
ceph tell osd.* injectargs '--osd_disk_thread_ioprio_priority 7' ceph tell osd.* injectargs '--osd_disk_thread_ioprio_class idle' However on the ceph config documentation http://docs. ceph.com/docs/mimic/rados/configuration/osd-config-ref/ "Since Jewel scrubbing is no longer carried out by the disk iothread, see osd priority options instead " Does anyone have info on this osd priority setting for Luminous release? Thanks
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