From e039a442b21bd22b0d95338c02d2524f139b7361 Mon Sep 17 00:00:00 2001
From: Jonathan Ellis <jbellis@apache.org>
Date: Mon, 24 May 2010 18:19:55 +0000
Subject: [PATCH] improve default JVM GC options.  patch by Jacob Kessler and
 Brandon Williams for CASSANDRA-1014

git-svn-id: https://svn.apache.org/repos/asf/cassandra/branches/cassandra-0.6@947743 13f79535-47bb-0310-9956-ffa450edef68
---
 CHANGES.txt         | 1 +
 bin/cassandra.in.sh | 8 +++-----
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/CHANGES.txt b/CHANGES.txt
index b77ae6c373..1702b070dd 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -25,6 +25,7 @@
  * windows script for nodetool (CASSANDRA-1113)
  * expose PhiConvictThreshold (CASSANDRA-1053)
  * make repair of RF==1 a no-op (CASSANDRA-1090)
+ * improve default JVM GC options (CASSANDRA-1014)
 
 
 0.6.1
diff --git a/bin/cassandra.in.sh b/bin/cassandra.in.sh
index 322283f5ea..9d66ab016c 100644
--- a/bin/cassandra.in.sh
+++ b/bin/cassandra.in.sh
@@ -39,16 +39,14 @@ done
 # Arguments to pass to the JVM
 JVM_OPTS=" \
         -ea \
-        -Xms128M \
+        -Xms256M \
         -Xmx1G \
-        -XX:TargetSurvivorRatio=90 \
-        -XX:+AggressiveOpts \
         -XX:+UseParNewGC \
         -XX:+UseConcMarkSweepGC \
         -XX:+CMSParallelRemarkEnabled \
+        -XX:SurvivorRatio=8 \
+        -XX:MaxTenuringThreshold=1 \
         -XX:+HeapDumpOnOutOfMemoryError \
-        -XX:SurvivorRatio=128 \
-        -XX:MaxTenuringThreshold=0 \
         -Dcom.sun.management.jmxremote.port=8080 \
         -Dcom.sun.management.jmxremote.ssl=false \
         -Dcom.sun.management.jmxremote.authenticate=false"