[ceph-users] Re: ceph mds can't recall client caps anymore

hi, i am appreciate you work very much, there is a problem about ceph mds i meet. ceph version: luminous the mds cache grow to 20G and limit is 4G after 'stat *' from client which mount by kernel(centos7 , 4.14). there are 1000w files in this dir. mds log show recall_client_state does not work after recall some caps. log is like this: 2020-04-07 17:08:36.841304 7f23ddd15700 10 mds.2.server recall_client_state: session client.2366013 172.16.200.20:0/4162573294 caps 6801282, leases 0 2020-04-07 17:08:36.841323 7f23ddd15700 15 mds.2.server session recall threshold (16384) hit at 0; skipping! 2020-04-07 17:08:36.841326 7f23ddd15700 7 mds.2.server recalled (throttled) 0 client caps. mds_recall_max_decay_rate = 2.5