JDK-7179517 : Enable NUMA by default on NUMA hardware
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: hs23.2
  • Priority: P4
  • Status: Open
  • Resolution: Unresolved
  • OS: generic
  • CPU: generic
  • Submitted: 2012-06-25
  • Updated: 2019-02-11
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.
Other
tbdUnresolved
Related Reports
Relates :  
JDK-8046153 - JEP 163: Enable NUMA Mode by Default When Appropriate
Description
Benchmarks with large heaps shows improved performance when ran with -XX:+UseNUMA and -XX:+UseParallelGC. Since ParallelGC is default turning on UseNUMA would improve out of the box performance in many cases.

UseNUMA will check if it runs on NUMA hardware and if not turn itself of, so it should be safe to set UseNUMA to true by default.
Comments
EVALUATION Patch to turn on UseNUMA by default on Linux and Windows contributed by Eric Caspole.
25-06-2012