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Bug ID: 7037939 NUMA: Disable adaptive resizing if SHM large pages are used
7037939 : NUMA: Disable adaptive resizing if SHM large pages are used

Details
Type:
Bug
Submit Date:
2011-04-19
Status:
Closed
Updated Date:
2011-07-29
Project Name:
JDK
Resolved Date:
2011-05-10
Component:
hotspot
OS:
generic
Sub-Component:
gc
CPU:
generic
Priority:
P3
Resolution:
Fixed
Affected Versions:
7
Fixed Versions:
hs21

Related Reports
Backport:
JDK-2209662 - NUMA: Disable adaptive resizing if SHM large pages are used

Sub Tasks

Description
It's impossible to uncommit pages allocated as a part of a shared memory segment, therefore it's impossible in the current implementation of the NUMA-aware allocate to move pages between lgroups. The solution is to disable adaptive resizing in this case (the SHM large page allocation is obsolete anyway).

Comments
EVALUATION

http://hg.openjdk.java.net/jdk7/hotspot-rt/hotspot/rev/c303b3532d4a
2011-05-05 
EVALUATION

http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/c303b3532d4a
2011-04-27


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