Hello, I've created a 3 nodes cluster with MON, MGR, OSD and MDS on all (2 MDS actives), and I've noticed that MDS is using a lot of memory (just now is using 12.5GB of RAM): # ceph daemon mds.kavehome-mgto-pro-fs01 dump_mempools | jq -c '.mds_co'; ceph daemon mds.kavehome-mgto-pro-fs01 perf dump | jq '.mds_mem.rss' {"items":9272259,"bytes":510032260} 12466648
I've configured the limit: mds_cache_memory_limit = 536870912 But looks like is ignored, because is about 512Mb and is using a lot more. Is there any way to limit the memory usage of MDS, because is giving a lot of troubles because start to swap. Maybe I've to limit the cached inodes? The other active MDS is using a lot less memory (2.5Gb). but also is using more than 512Mb. The standby MDS is not using memory it all. I'm using the version: ceph version 12.2.7 (3ec878d1e53e1aeb47a9f619c49d9e7c0aa384d5) luminous (stable). Thanks!! -- _________________________________________ Daniel Carrasco Marín Ingeniería para la Innovación i2TIC, S.L. Tlf: +34 911 12 32 84 Ext: 223 www.i2tic.com _________________________________________ -- _________________________________________ Daniel Carrasco Marín Ingeniería para la Innovación i2TIC, S.L. Tlf: +34 911 12 32 84 Ext: 223 www.i2tic.com _________________________________________
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