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Bug ID: JDK-6889757 G1: enable card mark elision for initializing writes by compiler (ReduceInitialCardMarks)
JDK-6889757 : G1: enable card mark elision for initializing writes by compiler (ReduceInitialCardMarks)

Details
Type:
Enhancement
Submit Date:
2009-10-08
Status:
Resolved
Updated Date:
2010-04-02
Project Name:
JDK
Resolved Date:
2009-11-11
Component:
hotspot
OS:
generic
Sub-Component:
gc
CPU:
generic
Priority:
P3
Resolution:
Fixed
Affected Versions:
hs17
Fixed Versions:
hs17 (b04)

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

Sub Tasks

Description
ReduceInitialCardMarks-enabled card mark elision of initializing
writes has been in the code base for a while (since 6u10/hs11) but has
been  disabled for G1. The changes needed to fix 6888898 should
allow that optimization to be enabled for G1 as well.

                                    

Comments
EVALUATION

Yes.
                                     
2009-10-08
EVALUATION

http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/39b01ab7035a
                                     
2009-10-16
EVALUATION

http://hg.openjdk.java.net/hsx/hsx16/baseline/rev/aa001a20bd61
                                     
2009-10-22
EVALUATION

http://hg.openjdk.java.net/hsx/hsx16/master/rev/aa001a20bd61
                                     
2009-10-22



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