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From "EJ Ciramella" <ejcirame...@upromise.com>
Subject RE: ant memory leak - not fixed???
Date Thu, 16 Mar 2006 18:19:58 GMT
Would incremental garbage cleanup help?
ANT_OPTS=-Xincgc



-----Original Message-----
From: Xiangzhou Wang [mailto:xiangw@yahoo.com] 
Sent: Thursday, March 16, 2006 1:15 PM
To: user@ant.apache.org
Subject: ant memory leak - not fixed???

Hi,

I know it is not a new problem.

I am using ant 1.6.5 to compile large number of java
files pre-generated from jsp pages with tomcat 5.5.15
jspC. The total number of bytes of these java files is
around 150 MB, total class is 40MB, total lib (exclude
java) is 21MB.

I am using ant only, NO IDE tools. the javac config
is:
    <javac destdir="${build.home}/WEB-INF/classes"
           optimize="off"
           debug="on" failonerror="false"
           srcdir="${build.home}/WEB-INF/src" 
           memoryInitialSize="512m"
           memoryMaximumSize="512m"
           source="1.5"
           target="1.5"
           fork="true" verbose="5" listfiles="true">
        ....for classpath
    </javac>

I always get failure because of "system out of
resource". 

    [javac] The system is out of resources.
    [javac] Consult the following stack trace for
details.
    [javac] java.lang.OutOfMemoryError: Java heap
space
    [javac] Compile failed; see the compiler error
output for details.


The ant process eats up large chunk of memory (>500MB,
total memory is 1GB). I also used javac -XX:paralelGC
to launch ant, still the same error. I set fork for
true and false, both have same error too.

It is claimed the memory leak is fixed, is there
anyone with similar problem? How to solve it? 

It seems to me that ant caches a lot of things in the
memory, is there a way to hack ant to force disk
writing.

Many thanks,
William


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