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Posted to users@tomcat.apache.org by Black Friday <bf...@gmail.com> on 2009/03/06 04:40:56 UTC
Tomcat Memory Leaks
Hi,
My system environment is: Windows 2000 Server. JDK 1.5, tomcat 4.X, Oracle 9
The problem is:
After tomcat was started, the memory of the tomcat grows continuosly,
reaches till 1.3G. The system is 2GB.
This happens when no application is running. After tomcat reaches 1.3G, when
application starts, the response is slow.
Can some one help me with this?
Thanks!!
Re: Tomcat Memory Leaks
Posted by Black Friday <bf...@gmail.com>.
Thanks for all your response.
I did see today there were about 6 zip files each of 50-60MB in the WEBAPP
folder. These were some back-up files. I did archive these files to other
folder and restarted the TOMCAT. Now when TOMCAT was restarted, the memory
was reduced and CPU consumption was stabilized.
Could these files have been the reason for the memory leak? If so how?
Thanks,
On 3/6/09, Ilya Kazakevich <ka...@devexperts.com> wrote:
>
> Use profiler.
> Take a look at: http://www.yourkit.com/overview/index.jsp
>
> It is a good profiler with manual which will teach you how to use yourkit
> to
> find memory leaks.
>
> ====================
> Kazakevich Ilya,
> MCP, SCJP
> ====================
>
>
>
> -----Original Message-----
> From: Black Friday [mailto:bfshopper@gmail.com]
> Sent: Friday, March 06, 2009 6:41 AM
> To: users@tomcat.apache.org
> Subject: Tomcat Memory Leaks
>
> Hi,
>
> My system environment is: Windows 2000 Server. JDK 1.5, tomcat 4.X, Oracle
> 9
>
> The problem is:
>
> After tomcat was started, the memory of the tomcat grows continuosly,
> reaches till 1.3G. The system is 2GB.
> This happens when no application is running. After tomcat reaches 1.3G,
> when
> application starts, the response is slow.
>
> Can some one help me with this?
>
> Thanks!!
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
RE: Tomcat Memory Leaks
Posted by Ilya Kazakevich <ka...@devexperts.com>.
Use profiler.
Take a look at: http://www.yourkit.com/overview/index.jsp
It is a good profiler with manual which will teach you how to use yourkit to
find memory leaks.
====================
Kazakevich Ilya,
MCP, SCJP
====================
-----Original Message-----
From: Black Friday [mailto:bfshopper@gmail.com]
Sent: Friday, March 06, 2009 6:41 AM
To: users@tomcat.apache.org
Subject: Tomcat Memory Leaks
Hi,
My system environment is: Windows 2000 Server. JDK 1.5, tomcat 4.X, Oracle 9
The problem is:
After tomcat was started, the memory of the tomcat grows continuosly,
reaches till 1.3G. The system is 2GB.
This happens when no application is running. After tomcat reaches 1.3G, when
application starts, the response is slow.
Can some one help me with this?
Thanks!!
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Re: Tomcat Memory Leaks
Posted by Mark Thomas <ma...@apache.org>.
Diego Rodríguez Martín wrote:
> Hi,
>
> I'm not an expert, but I think Tomcat 4.X is not compatible with JDK
> 1.5.
That is not correct. Tomcat 4.x works quite happily with 1.4, 1.5 and
1.6. I have also had a number of recent versions running on 1.3 and 1.2
JVMs although without extensive testing.
Mark
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Re: Tomcat Memory Leaks
Posted by Diego Rodríguez Martín <dr...@altiria.com>.
Hi,
I'm not an expert, but I think Tomcat 4.X is not compatible with JDK
1.5.
Regards,
Diego Rodríguez
Black Friday escribió:
> Hi,
>
> My system environment is: Windows 2000 Server. JDK 1.5, tomcat 4.X, Oracle 9
>
> The problem is:
>
> After tomcat was started, the memory of the tomcat grows continuosly,
> reaches till 1.3G. The system is 2GB.
> This happens when no application is running. After tomcat reaches 1.3G, when
> application starts, the response is slow.
>
> Can some one help me with this?
>
> Thanks!!
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org
Re: Tomcat Memory Leaks
Posted by Anurag Kapur <an...@gmail.com>.
Some servlet on startup 'could' be a problem.
To get a more definite insight, it might be worth obtaining a Java Heap Dump
when you think the memory utilization is very high(close to 1.3G). This
would help you know what objects are consuming a large portion of the heap
and thus a potential indication on what is causing a memory leak.
Cheers
Anurag
------------------------------------------------------------------
Anurag Kapur
Associate - Technology,
Sapient Corporation India.
http://www.linkedin.com/in/anuragkapur
------------------------------------------------------------------
On Fri, Mar 6, 2009 at 5:56 AM, zhaoxueqing <zh...@g-data.com.cn>wrote:
> May be some servlet is start up with tomcat.
>
> like
>
> load-on-startup
>
>
> check your server.xml and webapps directory
>
>
> ----- Original Message -----
> From: "Black Friday" <bf...@gmail.com>
> To: <us...@tomcat.apache.org>
> Sent: Friday, March 06, 2009 11:40 AM
> Subject: Tomcat Memory Leaks
>
>
> > Hi,
> >
> > My system environment is: Windows 2000 Server. JDK 1.5, tomcat 4.X,
> Oracle 9
> >
> > The problem is:
> >
> > After tomcat was started, the memory of the tomcat grows continuosly,
> > reaches till 1.3G. The system is 2GB.
> > This happens when no application is running. After tomcat reaches 1.3G,
> when
> > application starts, the response is slow.
> >
> > Can some one help me with this?
> >
> > Thanks!!
> >
>
Re: Tomcat Memory Leaks
Posted by zhaoxueqing <zh...@g-data.com.cn>.
May be some servlet is start up with tomcat.
like
load-on-startup
check your server.xml and webapps directory
----- Original Message -----
From: "Black Friday" <bf...@gmail.com>
To: <us...@tomcat.apache.org>
Sent: Friday, March 06, 2009 11:40 AM
Subject: Tomcat Memory Leaks
> Hi,
>
> My system environment is: Windows 2000 Server. JDK 1.5, tomcat 4.X, Oracle 9
>
> The problem is:
>
> After tomcat was started, the memory of the tomcat grows continuosly,
> reaches till 1.3G. The system is 2GB.
> This happens when no application is running. After tomcat reaches 1.3G, when
> application starts, the response is slow.
>
> Can some one help me with this?
>
> Thanks!!
>