Author: jbellis
Date: Fri Dec 3 18:59:02 2010
New Revision: 1041953
URL: http://svn.apache.org/viewvc?rev=1041953&view=rev
Log:
add commented-out JVM_OPTS lines for GC logging
patch by mdennis; reviewed by jbellis for CASSANDRA-1807
Modified:
cassandra/branches/cassandra-0.7/conf/cassandra-env.sh
Modified: cassandra/branches/cassandra-0.7/conf/cassandra-env.sh
URL:
http://svn.apache.org/viewvc/cassandra/branches/cassandra-0.7/conf/cassandra-env.sh?rev=1041953&r1=1041952&r2=1041953&view=diff
==============================================================================
--- cassandra/branches/cassandra-0.7/conf/cassandra-env.sh (original)
+++ cassandra/branches/cassandra-0.7/conf/cassandra-env.sh Fri Dec 3 18:59:02
2010
@@ -78,7 +78,7 @@ if [ "`uname`" = "Linux" ] ; then
JVM_OPTS="$JVM_OPTS -Xss128k"
fi
-# GC tuning options.
+# GC tuning options
JVM_OPTS="$JVM_OPTS -XX:+UseParNewGC"
JVM_OPTS="$JVM_OPTS -XX:+UseConcMarkSweepGC"
JVM_OPTS="$JVM_OPTS -XX:+CMSParallelRemarkEnabled"
@@ -87,6 +87,14 @@ JVM_OPTS="$JVM_OPTS -XX:MaxTenuringThres
JVM_OPTS="$JVM_OPTS -XX:CMSInitiatingOccupancyFraction=75"
JVM_OPTS="$JVM_OPTS -XX:+UseCMSInitiatingOccupancyOnly"
+# GC logging options -- uncomment to enable
+# JVM_OPTS="$JVM_OPTS -XX:+PrintGCDetails"
+# JVM_OPTS="$JVM_OPTS -XX:+PrintGCTimeStamps"
+# JVM_OPTS="$JVM_OPTS -XX:+PrintClassHistogram"
+# JVM_OPTS="$JVM_OPTS -XX:+PrintTenuringDistribution"
+# JVM_OPTS="$JVM_OPTS -XX:+PrintGCApplicationStoppedTime"
+# JVM_OPTS="$JVM_OPTS -Xloggc:/var/log/cassandra/gc.log"
+
# Prefer binding to IPv4 network intefaces (when net.ipv6.bindv6only=1). See
# http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6342561 (short version:
# comment out this entry to enable IPv6 support).
