2.6.0-test11 java application memory usage

2.6.0-test11 java application memory usage

[hemp4fuel]

I am running 2.6.0-test11 with a duron 1.3ghz with 630mb ram using 
reiserfs and suns 1.4.2_01 jre, with 2.4.xx kernels the java based 
application I run used around 35-50mb memory, with the 2.6.0-test11 it 
goes right to 250mb and rises from there.  When I revert back to 2.4.23 
it is back to 35-50mb memory usage.

Dustin

Re: 2.6.0-test11 java application memory usage

[hanasaki]

Running 2.6.0-test11 and netbeans.org and tomcat under Java(TM) 2 
Runtime Environment, Standard Edition (build 1.4.2-b28) and havent seen 
anything remotely like this.

hemp4fuel wrote:
> I am running 2.6.0-test11 with a duron 1.3ghz with 630mb ram using 
> reiserfs and suns 1.4.2_01 jre, with 2.4.xx kernels the java based 
> application I run used around 35-50mb memory, with the 2.6.0-test11 it 
> goes right to 250mb and rises from there.  When I revert back to 2.4.23 
> it is back to 35-50mb memory usage.
> 
> Dustin

Re: 2.6.0-test11 java application memory usage

[Ed Tomlinson]

On December 08, 2003 08:05 pm, hemp4fuel wrote:
> I am running 2.6.0-test11 with a duron 1.3ghz with 630mb ram using
> reiserfs and suns 1.4.2_01 jre, with 2.4.xx kernels the java based
> application I run used around 35-50mb memory, with the 2.6.0-test11 it
> goes right to 250mb and rises from there.  When I revert back to 2.4.23
> it is back to 35-50mb memory usage.

Problems like this have been seen within the freenet project.  Are you using
an NTPL enabled libc?  If so that is probably the problem.  It would seem that
sun java does not yet like NTPL.

Ed Tomlinson

Re: 2.6.0-test11 java application memory usage

[Hui Huang]

Ed Tomlinson wrote:
> On December 08, 2003 08:05 pm, hemp4fuel wrote:
> 
>>I am running 2.6.0-test11 with a duron 1.3ghz with 630mb ram using
>>reiserfs and suns 1.4.2_01 jre, with 2.4.xx kernels the java based
>>application I run used around 35-50mb memory, with the 2.6.0-test11 it
>>goes right to 250mb and rises from there.  When I revert back to 2.4.23
>>it is back to 35-50mb memory usage.
> 
> 
> Problems like this have been seen within the freenet project.  Are you using
> an NTPL enabled libc?  If so that is probably the problem.  It would seem that
> sun java does not yet like NTPL.
> 

There is a known memory leak when creating tens of thousands of
threads on RHEL AS3 (NPTL-0.60). It's fixed in 1.4.2_04, which
should get released early next year. Also I've been told by Ulrich
that it's fixed on libc side too.

It's likely something else if you don't create that many of
threads. Send me an email if you have a testcase.

regards,
-hui