issues after porting a mac app from Java 6 to 7u9

[Joshua Smith]

If this is the problem, we've found that -XX:+UseCompressedOops makes a huge difference in our apps.

On Nov 12, 2012, at 10:08 AM, Phil Race <philip.race at oracle.com> wrote:

> On 11/12/12 6:54 AM, Rick Hillegas wrote:
>> 
>> 
>> 2) The other problem is probably too vague, but here goes: I seem to have memory management issues. After running the app for a while, it starts freezing up and I watch the beachball spin. Eventually the app becomes unusable and I have to re-start it. Is it expected that I will need to give an app more memory in order to run it on Java 7? 
> 
> This could be VM differences. 64 bit vs 32 bit maybe.
> JDK 7 is 64 bit only. If you are explicitly constraining memory that could well be an issue.
> If  you are using defaults you might want to see which VM you were using with JDK6.
> If it was 32 bit, toggle it to 64 bit and see if the issues occur there as well.
> 
> -phil.