-Xminf / -Xmaxf

Specifies the minimum and maximum proportion of the heap that must remain free after a global garbage collection cycle.

If the free space is above or below these limits, the OpenJ9 VM attempts to adjust the heap size so that: -Xminf ≤ free space ≤ -Xmaxf.

Syntax

Setting	Effect	Default
-Xminf<value>	Set minimum free space	30
-Xmaxf<value>	Set maximum free space	60

See also

• Heap shrinkage
• Heap expansion