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document the heap dump options

This commit is contained in:
kimchy 2010-11-23 03:51:38 +02:00
parent 3b2b901db0
commit b33010a24c
1 changed files with 10 additions and 2 deletions
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12
bin/elasticsearch.in.sh
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@ -7,9 +7,14 @@ if [ "x$ES_MAX_MEM" = "x" ]; then
ES_MAX_MEM=1g
fi
# Arguments to pass to the JVM
# min and max heap sizes should be set to the same value to avoid
# stop-the-world GC pauses during resize, and so that we can lock the
# heap in memory on startup to prevent any of it from being swapped
# out.
JAVA_OPTS="$JAVA_OPTS -Xms${ES_MIN_MEM}"
JAVA_OPTS="$JAVA_OPTS -Xmx${ES_MAX_MEM}"
# reduce the per-thread stack size
JAVA_OPTS="$JAVA_OPTS -Xss128k"
JAVA_OPTS="$JAVA_OPTS -Djline.enabled=true"
@ -29,5 +34,8 @@ JAVA_OPTS="$JAVA_OPTS -XX:MaxTenuringThreshold=1"
JAVA_OPTS="$JAVA_OPTS -XX:CMSInitiatingOccupancyFraction=75"
JAVA_OPTS="$JAVA_OPTS -XX:+UseCMSInitiatingOccupancyOnly"
# Causes the JVM to dump its heap on OutOfMemory.
JAVA_OPTS="$JAVA_OPTS -XX:+HeapDumpOnOutOfMemoryError"
JAVA_OPTS="$JAVA_OPTS -XX:HeapDumpPath=$ES_HOME/work/heap"
# The path to the heap dump location, note directory must exists and have enough
# space for a full heap dump.
#JAVA_OPTS="$JAVA_OPTS -XX:HeapDumpPath=$ES_HOME/logs/heapdump.hprof"