On 19 July 2018 at 10:43, Léo FERLIN SUTTON <lfer...@mailjet.com.invalid> wrote: > Hello list ! > > I have a question about cassandra memory usage. > > My cassandra nodes are slowly using up all my ram until they get OOM-Killed. > > When I check the memory usage with nodetool info the memory > (off-heap+heap) doesn't match what the java process is really using.
Hi Léo, It's possible that glibc is creating too many memory arenas. Are you setting/exporting MALLOC_ARENA_MAX to something sane before calling the JVM? You can check that in /proc/<pid>/environ. I would also turn on -XX:NativeMemoryTracking=summary and use jcmd to check out native memory usage from the JVM's perspective. -Mark --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@cassandra.apache.org For additional commands, e-mail: user-h...@cassandra.apache.org
