United StatesChange Country, Oracle Worldwide Web Sites Communities I am a... I want to...
Bug ID: JDK-6739357 CMS: Switch off CMSPrecleanRefLists1 until 6722113 can be fixed
JDK-6739357 : CMS: Switch off CMSPrecleanRefLists1 until 6722113 can be fixed

Details
Type:
Bug
Submit Date:
2008-08-20
Status:
Resolved
Updated Date:
2011-03-17
Project Name:
JDK
Resolved Date:
2008-09-12
Component:
hotspot
OS:
solaris,generic,solaris_10,linux_redhat_5.0
Sub-Component:
gc
CPU:
x86,generic
Priority:
P2
Resolution:
Fixed
Affected Versions:
hs14,5.0u15,6u1,6u2,6u4
Fixed Versions:
hs14 (b04)

Related Reports
Backport:
Backport:
Backport:
Backport:
Backport:
Backport:
Duplicate:
Duplicate:
Duplicate:
Duplicate:
Duplicate:
Duplicate:
Duplicate:
Relates:
Relates:
Relates:
Relates:

Sub Tasks

Description
See comments section.

                                    

Comments
EVALUATION

Has been reviewed and tested. Will be pushed to hotspot-gc (openjdk7) tonight.
                                     
2008-08-20
SUGGESTED FIX

The obvious 1-line change:

--- old/src/share/vm/runtime/globals.hpp	Wed Aug 20 02:02:55 2008
+++ new/src/share/vm/runtime/globals.hpp	Wed Aug 20 02:02:53 2008
@@ -1443,7 +1443,7 @@
           "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence"  \
           " ratio")                                                         \
                                                                             \
-  product(bool, CMSPrecleanRefLists1, true,                                 \
+  product(bool, CMSPrecleanRefLists1, false,                                \
           "Preclean ref lists during (initial) preclean phase")             \
                                                                             \
   product(bool, CMSPrecleanRefLists2, false,                                \
                                     
2008-08-20
EVALUATION

http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/bfcb639d5bca
                                     
2008-08-21
SUGGESTED FIX

changeset:   286:bfcb639d5bca
user:        ysr
date:        Wed Aug 20 15:41:36 2008 -0700
summary:     6739357: CMS: Switch off CMSPrecleanRefLists1 until 6722113 can be fixed
                                     
2008-08-26



Hardware and Software, Engineered to Work Together