Re: Minor Follow-up: reduced cached mem; resident set size growth

2011-04-08 Thread Chris Burroughs
On 04/05/2011 03:04 PM, Chris Burroughs wrote: > I have gc logs if anyone is interested. This is from a node with standard io, jna enabled, but limits were not set for mlockall to succeed. One can see -/+ buffers/cache free shrinking and the C* pid's RSS growing. Includes several days of: gc l

Re: Minor Follow-up: reduced cached mem; resident set size growth

2011-04-06 Thread Chris Burroughs
On 04/05/2011 04:38 PM, Peter Schuller wrote: >> - Different collectors: -XX:+UseParallelGC -XX:+UseParallelOldGC > > Unless you also removed the -XX:+UseConcMarkSweepGC I *think* it takes > precedence, so that the above options would have no effect. I didn't > test. In either case, did you defini

Re: Minor Follow-up: reduced cached mem; resident set size growth

2011-04-05 Thread Peter Schuller
> - Different collectors: -XX:+UseParallelGC -XX:+UseParallelOldGC Unless you also removed the -XX:+UseConcMarkSweepGC I *think* it takes precedence, so that the above options would have no effect. I didn't test. In either case, did you definitely confirm CMS was no longer being used? (Should be p

Minor Follow-up: reduced cached mem; resident set size growth

2011-04-05 Thread Chris Burroughs
This is a minor followup to this thread which includes required context: http://www.mail-archive.com/user@cassandra.apache.org/msg09279.html I haven't solved the problem, but since negative results can also be useful I thought I would share them. Things I tried unsuccessfully (on individual node