From 56fc22d6f8658c0c34c9d35be81f9da2c003ef4c Mon Sep 17 00:00:00 2001
From: sla <unknown>
Date: Wed, 29 May 2013 09:42:39 +0200
Subject: [PATCH] 8015440:
 java/lang/management/MemoryMXBean/ResetPeakMemoryUsage.java fails with
 RuntimeException Summary: Make sure serial gc compacts heap every time
 Reviewed-by: mchung, brutisso, nloodin

---
 .../lang/management/MemoryMXBean/ResetPeakMemoryUsage.java | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/test/java/lang/management/MemoryMXBean/ResetPeakMemoryUsage.java b/test/java/lang/management/MemoryMXBean/ResetPeakMemoryUsage.java
index 6b02397bd..9e37d6670 100644
--- a/test/java/lang/management/MemoryMXBean/ResetPeakMemoryUsage.java
+++ b/test/java/lang/management/MemoryMXBean/ResetPeakMemoryUsage.java
@@ -21,6 +21,11 @@
  * questions.
  */
 
+/*
+ * The -XX:MarkSweepAlwaysCompactCount=1 argument below makes sure serial gc
+ * compacts the heap at every full gc so that the usage is correctly updated.
+ */
+
 /*
  * @test
  * @bug     4892507
@@ -28,7 +33,7 @@
  * @author  Mandy Chung
  *
  * @build ResetPeakMemoryUsage MemoryUtil
- * @run main/othervm -XX:+UseSerialGC -Xmn8m ResetPeakMemoryUsage
+ * @run main/othervm -XX:+UseSerialGC -XX:MarkSweepAlwaysCompactCount=1 -Xmn8m ResetPeakMemoryUsage
  * @run main/othervm -XX:+UseConcMarkSweepGC -Xmn8m ResetPeakMemoryUsage
  * @run main/othervm -XX:+UseParallelGC -Xmn8m ResetPeakMemoryUsage
  * @run main/othervm -XX:+UseG1GC -Xmn8m -XX:G1HeapRegionSize=1m ResetPeakMemoryUsage
-- 
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