Sounds like http://wiki.apache.org/cassandra/FAQ#mmap
On Thu, Aug 25, 2011 at 10:36 PM, King JKing <beuk...@gmail.com> wrote: > Dear all, > My Cassandra 082 server had very large swap memory. > JConsole show memory used just 2.9GB. But htop (top) show Cassandra process > take 8700MB. > Here is my config: > MAX_HEAP_SIZE="6G" > HEAP_NEWSIZE="400M" > 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="$JVM_OPTS -XX:MaxTenuringThreshold=2" > JVM_OPTS="$JVM_OPTS -XX:CMSInitiatingOccupancyFraction=75" > JVM_OPTS="$JVM_OPTS -XX:+UseCMSInitiatingOccupancyOnly" > JConsole also show Memory Pool "Par Survivor Space" always full (41MB/50MB) > and never reduce. > Could you help me? > Thank a lot for support. -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com
