Re: [gentoo-java] java.lang.OutOfMemoryError on amd64

[Sebastiaan <sebastia@ch.its.tudelft.nl>]

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Hi!

On Fri, 17 Mar 2006, Joshua Nichols wrote:

> Whoops... accidentally replied off list much earlier today.
>
> Sebastiaan wrote:
>> I have tried to increase the amount of memory java can use by adding 
>> -J-Xms48m to the command (right after configuration, since a second 
>> compilation attempt always works), but without succes.
>> 
> -Xms sets the initial memory allocated. You probably want -Xmx, which sets 
> the maximum amount of memory that will be allocated, and you probably want 
> this to be fairly high, or at least more than 48m.
> If you're going to patch the makefiles, a clean way to do it may be to add 
> like a variable JAVACFLAGS, which we can then set in the ebuild like:
> use amd64 && JAVACFLAGS="-J-Xmx256m ${JAVACFLAGS}"

Yes! This works.

>> Does anyone have an idea what the problem can be? I am unsure if the 
>> problem lies within VTK or Blackdown. Sun-jdk does not have a 64 bit 
>> version available, so I cannot compare with that.
>> 
> I'm pretty sure it's a blackdown on amd64 thing. We do encounter it for a few 
> packages, like net-p2p/azureus. For the record, there is a amd64 version of 
> sun-jdk-1.5 (and 1.6...), but I'm sure at this point I shouldn't have to go 
> into the concerns about using them ;)
>

I am still a little bit disfigured: is the problem is the amount of 
allocated memory, why does a second make always work? Perhaps javac is 
keeping some cache?

Thanks!
Sebastiaan


>> References:
>> I have previously posted this to 
>> http://bugs.gentoo.org/show_bug.cgi?id=123178 as well.
>> 
>
> Hope this helps,
> - Josh
>


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