Re: GC performance in 1.0.x

2012-02-23 Thread Jonathan Ellis
30ms pauses are on the low side of normal for a 800MB young gen under parnew. We're not going to be able to get rid of those, although it looks like you're seeing objects in the young gen die *very* quickly, so cutting that to say 200MB might give you shorter (and more frequent) pauses for the you

Re: GC performance in 1.0.x

2012-02-18 Thread Edward Capriolo
MAX_HEAP_SIZE="9G" HEAP_NEWSIZE="800M" 2 socket quad core 44GB RAM Cassandra 1.0.7 [edward@cdbla120 cassandra]$ free -g total used free sharedbuffers cached Mem:43 34 8 0 0 25 -/+ buffers/cache: 8