From ed99787c8e5c2bae7fbfaf397aad8f3501184de6 Mon Sep 17 00:00:00 2001
From: kimchy <kimchy@gmail.com>
Date: Sun, 7 Nov 2010 00:46:46 +0200
Subject: [PATCH] add a comment for the compressed oops option

---
 bin/elasticsearch.in.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/bin/elasticsearch.in.sh b/bin/elasticsearch.in.sh
index a8dfb123f30..99ca3e6d60e 100644
--- a/bin/elasticsearch.in.sh
+++ b/bin/elasticsearch.in.sh
@@ -14,8 +14,13 @@ JAVA_OPTS="$JAVA_OPTS -Xss128k"
 
 JAVA_OPTS="$JAVA_OPTS -Djline.enabled=true"
 
+# Enable aggressive optimizations in the JVM
 JAVA_OPTS="$JAVA_OPTS -XX:+AggressiveOpts"
 
+# Enable reference compression, reducing memory overhead on 64bit JVMs
+#    - Disabled by default as it is not stable for Sun JVM before 6u19
+#JAVA_OPTS="$JAVA_OPTS -XX:+UseCompressedOops"
+
 JAVA_OPTS="$JAVA_OPTS -XX:+UseParNewGC"
 JAVA_OPTS="$JAVA_OPTS -XX:+UseConcMarkSweepGC"
 JAVA_OPTS="$JAVA_OPTS -XX:+CMSParallelRemarkEnabled"