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