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Bug ID: 6937160 G1: should observe GCTimeRatio
6937160 : G1: should observe GCTimeRatio

Details
Type:
Enhancement
Submit Date:
2010-03-22
Status:
Closed
Updated Date:
2011-03-08
Project Name:
JDK
Resolved Date:
2011-03-08
Component:
hotspot
OS:
generic
Sub-Component:
gc
CPU:
generic
Priority:
P4
Resolution:
Fixed
Affected Versions:
hs18
Fixed Versions:
hs18

Related Reports
Backport:
JDK-2191648 - G1: should observe GCTimeRatio
Backport:
JDK-2193604 - G1: should observe GCTimeRatio
Backport:
JDK-2197996 - G1: should observe GCTimeRatio
Backport:
JDK-2199946 - G1: should observe GCTimeRatio
Backport:
JDK-2191257 - G1: should observe GCTimeRatio
Backport:
JDK-2191957 - G1: should observe GCTimeRatio
Relates:
JDK-6928059 - G1: command line parameter renaming

Sub Tasks

Description
Currently, G1 uses the G1GCPercent flag to determine what should be its target GC overhead. The flag is non-product. We recently made changes to the G1 flags to use existing ones where possible (see 6928059 for example).  So G1 should instead observe the existing GCTimeRatio flag instead of introducing a new one.

Comments
EVALUATION

http://hg.openjdk.java.net/hsx/hsx17/master/rev/a71b16365b3b
2010-04-09 
EVALUATION

http://hg.openjdk.java.net/hsx/hsx17/baseline/rev/a71b16365b3b
2010-04-08 
EVALUATION

http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/56507bcd639e
2010-04-03 
SUGGESTED FIX

See Public Comments.
2010-03-26 
PUBLIC COMMENTS

This is straightforward to implement. I will remove the G1GCPercent parameter and use GCTimeRatio to define the desired GC overhead for G1.
2010-03-26 
EVALUATION

See Public Comments.
2010-03-26


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