What is Garbage collector ZGC tuning: -XX:ZUncommitDelay?

Usage

You can set that heap memory must have been unused before being uncommitted:

-XX:ZUncommitDelay = seconds, where seconds is the desired amount of time in seconds.

Examples:

To set heap unused time to 3 minutes you can use:

-XX:ZUncommitDelay=180

Description:

Sets the amount of time (in seconds) that heap memory must have been unused before being uncommitted. By default, this option is set to 300 (5 minutes). Committing and uncommitting memory are relatively expensive operations. Using a lower value will cause heap memory to be uncommitted earlier, at the risk of soon having to commit it again.

Default Value:

Default value is 300 seconds

Errors:

None

Arguments related:

TODO link MinHeapFreeRatio, MaxHeapFreeRatio, Xmx, Xms, UseSerialGC, USeParNewGC, UseParallelGC, UseZGC

Related Posts:

• Garbage collectors documentation
• JVM memory model

NOTE:

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