Hello,
I use WiredTiger engine and ave storage configuration done
storage:
wiredTiger:
engineConfig:
cacheSizeGB: 9
Server RAM: 24 GB.
Information from systemctl status mongod
Memory: 19.8 GB (limit 20.1GB).
Sometimes without any reason I have
Jan 4 09:27:26 s kernel: [21037324.308350] conn315770 invoked oom-killer: gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=0
Jan 4 09:27:26 s kernel: [21037324.308627] oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0,oom_memcg=/system.slice/mongod.service,task_memcg=/system.slice/mongod.service,task=mongod,pid=237767,uid=107
Jan 4 09:27:26 s kernel: [21037324.308731] Memory cgroup out of memory: Killed process 237767 (mongod) total-vm:22557452kB, anon-rss:21047624kB, file-rss:4536kB, shmem-rss:0kB, UID:107 pgtables:41772kB oom_score_adj:0
How possible to identify why MongoDB uses more RAM than possible to use?
free -m output
total used free shared buff/cache available
Mem: 24048 16848 2020 0 5179 6807
Swap: 0 0 0