ceph bluestore data cache on osd

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Hi Team,

We need a mechanism to have some data cache on OSD build on bluestore  . Is there an option available to enable data cache?

With default configurations , OSD logs state that data cache is disabled by default,

 bluestore(/var/lib/ceph/osd/ceph-66) _set_cache_sizes cache_size 1073741824 meta 0.5 kv 0.5 data 0

We tried to change the config to have 49% for data and the OSD logs reflected as following, however don't see any improvement in iops status.

bluestore(/var/lib/ceph/osd/ceph-66) _set_cache_sizes cache_size 1073741824 meta 0.01 kv 0.5 data 0.49

Thanks,
Muthu

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