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What is Memory tuning: -XX:MinHeapSize?

what is Memory tuning: -XX:MinHeapSize? Have you used this JVM arguement before?What are the pros & cons of using this Java argument? Can you share your perspective/experience in using this JVM argument?

  • jvmargument

  • xx-minheapsize

  • x-minheapsize

  • Memory tuning

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Pavel Khodakovsky



You can set the minimum size of memory allocation pool:


-XX:MinHeapSize=size, where size is the amount of memory in bytes of  your choice.




Will set the mimimum size of allocated memory to 6 MB:










Sets the minimum size (in bytes) of the memory allocation pool. This value must be either 0, or a multiple of 1024 and greater than 1 MB. Append the letter k or K to indicate kilobytes, m or M to indicate megabytes, or g or G to indicate gigabytes. The default value is selected at run time based on the system configuration. If you set this option to 0, then the minimum size is set to the same value as the initial size.


Default Value:


Default value is platform-dependent.






Arguments related:


TODO link –XX:MaxHeapFreeRatio


Related Posts:



If you have additional comments, interesting experiences or even point of disagreement with this JVM argument description, please leave a comment. Your insights will help the entire 10+ million java developer community to develop one standard source of documentation for all the JVM arguments.

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