JDK-6791672 : enable 1G and larger pages on solaris
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: runtime
  • Affected Version: hs11
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • OS: generic,solaris_nevada
  • CPU: generic,x86
  • Submitted: 2009-01-08
  • Updated: 2011-11-25
  • Resolved: 2011-11-25
The Version table provides details related to the release that this issue/RFE will be addressed.

Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

To download the current JDK release, click here.
JDK 7 JDK 8 Other
7u2Fixed 8Fixed hs22Fixed
Description
HotSpot does not use 1G pages on amd processors that support them when running solaris.  They should be used when appropriate to improve performance.
The Intel teams says:
'We received the JVM hotspot binary that support 1GB page size, very quick run of SJBB shows above 1.10x speedup!'

John, Can you please provide a target release & build?  thanks.

Comments
EVALUATION See main CR
12-09-2011

EVALUATION http://hg.openjdk.java.net/hsx/hotspot-rt/hotspot/rev/24cee90e9453
23-08-2011

EVALUATION http://hg.openjdk.java.net/hsx/hotspot-main/hotspot/rev/24cee90e9453
19-08-2011

EVALUATION http://hg.openjdk.java.net/hsx/hotspot-gc/hotspot/rev/24cee90e9453
17-08-2011

EVALUATION Detect 1G pages on amd processors running solaris and use them when appropriate. See comments.
08-01-2009