OutOfMemory: Java heap space

Question

I am running the same java program on a windows and on a linux machine.
on windows i get OutOfMemory if i do not add -Xmx option (set to 512).
while on linux the program runs successfully even without -Xmx option.

My guess is its because windows and linux handles memory differently.
Can anyone explain this behavior?

possible duplicate of How is the default java heap size determined? — svens
– svens, Commented Jan 31, 2012 at 11:00
Is the configuration of both Windows and Unix machine same? (Processor, Memory, 32 bit or 64 bit)? — Manish
– Manish, Commented Jan 31, 2012 at 11:01

fospathi · Accepted Answer · 2020-07-08 14:54:15Z

5

The default maximum memory is 1/4 up to 1 GB of your main memory on server class machines. e.g. Linux. Windows 32-bit is considered a client class machine and the default maximum is 64 MB.

https://www.oracle.com/technetwork/java/javase/memorymanagement-whitepaper-150215.pdf

edited Jul 8, 2020 at 14:54

fospathi

5291 gold badge6 silver badges7 bronze badges

answered Jan 31, 2012 at 11:08

Peter Lawrey

535k83 gold badges770 silver badges1.2k bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

OutOfMemory: Java heap space

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related