Which version of the JVM are you using? Recent builds (u18, u19) have significantly improved GC.
On Tue, Apr 13, 2010 at 3:51 PM, Daniel Kluesing <d...@bluekai.com> wrote: > Has anyone done any tuning on the jvm gc options or are the options included > in bin/cassandra.in.sh basically the best choice? > > I'm working on getting our latency as consistent as possible, and the gc > likes to kick off 60+ms periods of unavailability for a node, which for my > application leads to a reasonable number of timed out requests. Outside of > the gc event, we get good responses. > > I'm happy with reduced throughput for shorter pauses, so I'm going to do the > standard jvm gc tuning guide[0] for short pauses, curious if anyone else has > gone down this path and gotten gc pauses consistent and low or if what's in > bin/cassandra.in.sh is basically the best I should expect. (Anyone tried > jrockit?) > > [0]http://java.sun.com/javase/technologies/hotspot/gc/gc_tuning_6.html >
