Usage:
You can set a number of threads for GC to use:
-XX:ParallelGCThreads=xxx, where xxx represents the number of threads for a garbage collector to use.
Description:
JVM allows you to tune it’s behavior during garbage collection. We can control the number of garbage collector threads with the command-line option -XX:ParallelGCThreads. Because multiple garbage collector threads are participating in a minor collection, some fragmentation is possible due to promotions from the young generation to the tenured generation during the collection. Each garbage collection thread involved in a minor collection reserves a part of the tenured generation for promotions and the division of the available space into these "promotion buffers" can cause a fragmentation effect. Reducing the number of garbage collector threads and increasing the size of the tenured generation will reduce this fragmentation effect.
Default Value:
The default value varies with the platform on which the JVM is running.
Errors:
None
Arguments related:
TODO link ParallelGCThreads, MaxGCPauseMillis , GCTimeRatio, MinHeapFreeRatio, MaxHeapFreeRatio, Xmx, Xms, UseSerialGC, USeParNewGC, UseParallelGC, UseZGC
Related Posts:
- Garbage collection tuning
- Garbage collectors documentation
- Quick start on Java GC
- Oracle’s documentation
NOTE:
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