how to record maximum heap memory consumption

[pvh35]

Hi,
I'd like to know what is the maximum heap memory reached during a java program execution.
I'm not searching for a graphic tools because I want to be able to record the value in a file each time I run the program.
Does anybody could help me ?
Thanks.

[JosAH]

Hi,
I'd like to know what is the maximum heap memory reached during a java program execution.
I'm not searching for a graphic tools because I want to be able to record the value in a file each time I run the program.

Have a look at the Runtime object, it can give you some statistics about memory usage.

kind regards,

Jos

[pvh35]

Thanks for your suggestion Jos.

Well, as for ManagementFactory.getMemoryPoolMXBeans(), the value returned is a snapshot value. After a garbage collector execution, the heap can decrease. so it will not give you the maximum used.

Pascal.