[ceph-admin@mds0 ~]$ ps aux | grep ceph-mds ceph 1841 3.5 94.3 133703308 124425384 ? Ssl Apr04 1808:32 /usr/bin/ceph-mds -f --cluster ceph --id mds0 --setuser ceph --setgroup ceph
[ceph-admin@mds0 ~]$ sudo ceph daemon mds.mds0 cache status { "pool": { "items": 173261056, "bytes": 76504108600 } } So, 80GB is my configured limit for the cache and it appears the mds is following that limit. But, the mds process is using over 100GB RAM in my 128GB host. I thought I was playing it safe by configuring at 80. What other things consume a lot of RAM for this process? Let me know if I need to create a new thread. On Thu, May 10, 2018 at 12:40 PM, Patrick Donnelly <pdonn...@redhat.com> wrote: > Hello Brady, > > On Thu, May 10, 2018 at 7:35 AM, Brady Deetz <bde...@gmail.com> wrote: > > I am now seeing the exact same issues you are reporting. A heap release > did > > nothing for me. > > I'm not sure it's the same issue... > > > [root@mds0 ~]# ceph daemon mds.mds0 config get mds_cache_memory_limit > > { > > "mds_cache_memory_limit": "80530636800" > > } > > 80G right? What was the memory use from `ps aux | grep ceph-mds`? > > > [root@mds0 ~]# ceph daemon mds.mds0 perf dump > > { > > ... > > "inode_max": 2147483647, > > "inodes": 35853368, > > "inodes_top": 23669670, > > "inodes_bottom": 12165298, > > "inodes_pin_tail": 18400, > > "inodes_pinned": 2039553, > > "inodes_expired": 142389542, > > "inodes_with_caps": 831824, > > "caps": 881384, > > Your cap count is 2% of the inodes in cache; the inodes pinned 5% of > the total. Your cache should be getting trimmed assuming the cache > size (as measured by the MDS, there are fixes in 12.2.5 which improve > its precision) is larger than your configured limit. > > If the cache size is larger than the limit (use `cache status` admin > socket command) then we'd be interested in seeing a few seconds of the > MDS debug log with higher debugging set (`config set debug_mds 20`). > > -- > Patrick Donnelly >
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