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Java Performance Tuning: -XX:+UseNuma (Doc ID 1315244.1)

Last updated on NOVEMBER 06, 2018

Applies to:

Java Platform, Standard Edition - Version: 6.0 to 6.0 - Release: 6.0 to 6.0
Linux x86
Sun 386i Sun/OS
This functionality has been available since Java 6u2 (Solaris) and 6u13 (Linux) on Sparc and x86 systems that use Non-Uniform Memory Architecture (NUMA). Windows is not supported.
The following systems use NUMA:
E6900 (Sparc)
X4600 / X4640 (Opteron)
CMT T5140 and T5240.

Only the Parallel GC (-XX:+UseParallelGC -XX:+UseParallelOldGC) is supported.
Other garbage collectors are not supported.

For more detailed information, please see the following blog:


The goal is to improve performance of Java applications.


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