A memory problem in ant or build.xml

["Mikael Petterson (KI/EAB)" <mi...@ericsson.com>]

Hi,

I am running Apache Ant version 1.6.2 compiled on July 16 2004 on Solaris 8.
I have about 1600 source files that I build.

I used ANT_OPTS="-Xms256m -Xmx512m";export ANT_OPTS 
to execute my build file. ( Is there a way to check that ant use this env. variable?).
Then I get 'java.lang.OutOfMemoryError'
I increase the heap ( start and max) to:
ANT_OPTS="-Xms512m -Xmx768m";export ANT_OPTS
And I don't get the error. Everything is fine.....or...

Well as a programmer I want to make sure that we use the resources as efficient as possible.
Can I optimize my build.xml to consume as litte with resources as possible? How?
Is it ' a known problem' that ant 1.6.2 consumes a  lot of memory? 
Does it matter which jvm I start ant in? ( I am using 1.4.2_02 )

All hints are very much appreciated.

//Mikael


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RE: A memory problem in ant or build.xml

[Rainer Noack <ra...@noacks.net>]

Hi Mikael,

You can fork the big memory eaters (f.e. <javac/> with your 1600 sourcefiles
or maybe <javadoc/>).
Then You can set up your main ant-process with just a small amount of memory
(xms and xmx)
And give the forked processes as much as they need.

Kind Regards

Rainer

> -----Original Message-----
> From: Mikael Petterson (KI/EAB) 
> [mailto:mikael.petterson@ericsson.com] 
> Sent: Friday, April 01, 2005 8:58 AM
> To: user@ant.apache.org
> Subject: A memory problem in ant or build.xml
> 
> 
> Hi,
> 
> I am running Apache Ant version 1.6.2 compiled on July 16 
> 2004 on Solaris 8. I have about 1600 source files that I build.
> 
> I used ANT_OPTS="-Xms256m -Xmx512m";export ANT_OPTS 
> to execute my build file. ( Is there a way to check that ant 
> use this env. variable?). Then I get 
> 'java.lang.OutOfMemoryError' I increase the heap ( start and 
> max) to: ANT_OPTS="-Xms512m -Xmx768m";export ANT_OPTS And I 
> don't get the error. Everything is fine.....or...
> 
> Well as a programmer I want to make sure that we use the 
> resources as efficient as possible. Can I optimize my 
> build.xml to consume as litte with resources as possible? 
> How? Is it ' a known problem' that ant 1.6.2 consumes a  lot 
> of memory? 
> Does it matter which jvm I start ant in? ( I am using 1.4.2_02 )
> 
> All hints are very much appreciated.
> 
> //Mikael
> 
> 
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> To unsubscribe, e-mail: user-unsubscribe@ant.apache.org
> For additional commands, e-mail: user-help@ant.apache.org
> 


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