JVM is getting crashed, whenever heap memory is exceeding 1.6 GB

[David Holmes]

Hi Meeraj,

Nice chatting to you at JavaOne in Hyderabad.

Thanks for posting the information. I'll take a look and see if I can 
reproduce.

Hotspot folks: as I understand the problem (and this is being seen by a 
number of folk in different circumstances) a 64-bit JVM running with 
-Xmx5G on a 16G system seems to always fail with OOME when ~1.6GB of 
heap has been consumed. I will try to produce and run the usual basic 
memory diagnostics.

Cheers,
David

On 7/05/2012 4:27 PM, MEERAJ KANAPARTHI wrote:
> Hello all,
>
> JVM is hanged or crashed, whenever heap memory is exceeding 1.6 GB.
> We were running ant build, in dual core server with 16GB Ram. The build
> got failed.
> We observed, that the JVM was crashing, when heap memory exceeded 1.6 GB.
>
> We have noticed same behavior with IBM portal server.
>
> I am attaching one sample program. Please try to run the program with
> different -xx options.
> You will find that no matter how much heap memory is set or providing
> excess RAM memory (16GB).
> JVM fails when heap memory reaches to 1.6 GB. One can check memory size
> in windows task manager.
>
>
> Regards,
> Meeraj