>> So to resolve this i must tune young generation (HEAP_NEWSIZE) -Xmn, and >> tune in_memory_compaction_limit_in_mb config parameter? > > More likely adjust the initial occupancy trigger and/or the heap size. > Probably just the latter. This is assuming you're on 0.7 with mostly > default JVM options. See cassandra-env.sh.
Well, in_memory_compaction_limit_in_mb can be relevant. But this should only matter if you have large rows in your column family. -- / Peter Schuller
