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hi all, seek your help for this. we are using luminous 12.2.12 and we enabled 3 active mds. when I running “ceph daemon mds.<x> dump loads” on any active mds, I always saw such like below "mds_load": { "mds.0": { "request_rate": 526.045993, "cache_hit_rate": 0.000000, … "mds.1": { "request_rate": 169.845956, "cache_hit_rate": 0.000000, … "mds.2": { "request_rate": 300.511478, "cache_hit_rate": 0.000000, don’t understand what’s this ‘cache_hit_rate’ and why it seems always 0? we actually set a bigger mds_cache_memory_limit than default such like 16G in /etc/ceph/ceph.conf. are they related? I checked
https://docs.ceph.com/docs/luminous/cephfs/mds-config-ref/ , but didn’t get further clue from the description of “mds cache *” settings. |
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