Hello We have 6 node cluster (cassandra 0.8.10). On one node i increase java heap size to 6GB, and now at this node begin grows swap, but system have about 3GB of free memory:
root@6wd003:~# free
total used free shared buffers cached
Mem: 24733664 21702812 3030852 0 6792 13794724
-/+ buffers/cache: 7901296 16832368
Swap: 1998840 2352 1996488
And swap space slowly grows, but i misunderstand why?
PS: We have JNA mlock, and set vm.swappiness = 0
PS: OS ubuntu 10.0.4(2.6.32-40-generic)
