Re: nodetool cleanup

2012-10-22 Thread Will @ SOHO
On 10/23/2012 01:25 AM, Peter Schuller wrote: On Oct 22, 2012 11:54 AM, "B. Todd Burruss" > wrote: > > does "nodetool cleanup" perform a major compaction in the process of > removing unwanted data? No. what is the internal memory model used? It sounds like it doesn't

Re: constant CMS GC using CPU time

2012-10-22 Thread Will @ SOHO
On 10/22/2012 09:05 PM, aaron morton wrote: # GC tuning options JVM_OPTS="$JVM_OPTS -XX:+UseParNewGC" JVM_OPTS="$JVM_OPTS -XX:+UseConcMarkSweepGC" JVM_OPTS="$JVM_OPTS -XX:+CMSParallelRemarkEnabled" JVM_OPTS="$JVM_OPTS -XX:SurvivorRatio=8" JVM_OPTS="$JVM_OPTS -XX:MaxTenuringThreshold=1" JVM_OPTS="

Re: Row caching memory usage in Cassandra 1.0.x

2012-10-22 Thread Will @ SOHO
On 10/22/2012 08:24 PM, aaron morton wrote: I'm not aware of how to track the memory usage for the off heap row cache in 1.0. The memory may show up in something like JConsole. What about seeing how much os memory is allocated to buffers and working backwards from there? Anyone else ? (One t