https://docs.ceph.com/en/latest/rados/configuration/mclock-config-ref/
IOPS (input/output operations per second)
Weighted Priority Queue (WPQ)
osd_mclock_scheduler_client_res
osd_mclock_scheduler_client_wgt
osd_mclock_scheduler_client_lim
osd_mclock_scheduler_background_recovery_res
osd_mclock_scheduler_background_recovery_wgt
osd_mclock_scheduler_background_recovery_lim
osd_mclock_scheduler_background_best_effort_res
osd_mclock_scheduler_background_best_effort_wgt
osd_mclock_scheduler_background_best_effort_lim
cmd：
#change the client reservation IOPS ratio for a specific OSD
ceph config set osd.0 osd_mclock_scheduler_client_res 0.5#The following command can be used to switch to the custom profile:
ceph config set osd osd_mclock_profile custom
