Java Performance Tuning: -XX:+UseNuma
(Doc ID 1315244.1)
Last updated on NOVEMBER 08, 2020
Applies to:Java Platform, Standard Edition - Version 6 to 6 [Release 6]
Sun SPARC Sun OS
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:
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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