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From Ian Danforth <idanfo...@numenta.com>
Subject Max heap not sticking?
Date Tue, 16 Aug 2011 01:08:07 GMT
All,

 When I connect to a node through jconsole it's telling me that my max heap
is only 1.7gb. (eg http://screencast.com/t/7DP8ovdUv) However I believe I
have properly specified that it should be 4GB in cassandra-env.sh. Total
memory is 7.5GB

 I see greatly increased GC activity as the heap approaches 1.7GB.

Can anyone suggest why the heap might not use all the memory as specified?

Ian


>From cassandra-env.sh

MAX_HEAP_SIZE="4096M"
HEAP_NEWSIZE="400M"

JVM_OPTS="$JVM_OPTS -Xms${MAX_HEAP_SIZE}"
JVM_OPTS="$JVM_OPTS -Xmx${MAX_HEAP_SIZE}"
JVM_OPTS="$JVM_OPTS -Xmn${HEAP_NEWSIZE}"

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