Re: Tomcat memory leak?

Thu, 24 Jan 2008 07:32:58 -0800

That's what I'm saying, I've been sitting on this for two days and can't figure it out. Do you mean to say that you tried it and even when accessing the JSP with the script - your memory stays low? What am I doing wrong then?
Please notice the tomcat version and the JRE version I stated (6.0.14, jre1.6.0_03). One more thing: as I said, I'm trying it with 64M of max heap space, but I figured, if it goes to 99.9% mem use, there's no use raising it (even though I tried and it reached 99.9% after a short while) 

Ofer.


----- Original Message ----- 
From: "Leon Rosenberg" <[EMAIL PROTECTED]>

To: "Tomcat Users List" <users@tomcat.apache.org>
Sent: Thursday, January 24, 2008 5:25 PM
Subject: Re: Tomcat memory leak?



I downloaded your example.
So you are telling us, that simply calling a JSP file with html markup
only and without any code kills your tomcat?

Regards
Leon

On Jan 24, 2008 4:19 PM, Ofer Kalisky <[EMAIL PROTECTED]> wrote:

Ok, since sending an attachment doesn't work,


simply create a webapp by the name of LoadTest and create two files 
inside:

something.jsp and something.html

the content of both files should be:

<html><body/></html>


try the load.py with both:

import httplib

i = 0
while 1:
 conn = httplib.HTTPConnection("localhost:8080")
 conn.request("GET", "/LoadTest/something.jsp")
 r1 = conn.getresponse()
 if (i % 500 == 0):
  print i
 i = i + 1
 conn.close()

sorry for any inconvenience

Ofer.

----- Original Message -----
From: "Ofer Kalisky" <[EMAIL PROTECTED]>
To: "Tomcat Users List" <users@tomcat.apache.org>

Sent: Thursday, January 24, 2008 5:08 PM
Subject: Re: Tomcat memory leak?


>I think the mailing list blocks war files...
>
> trying with zip...
>
> ----- Original Message -----
> From: <[EMAIL PROTECTED]>
> To: "Tomcat Users List" <users@tomcat.apache.org>
> Sent: Thursday, January 24, 2008 5:00 PM
> Subject: Re: Tomcat memory leak?
>
>
> Good Morning Ofer
>
> I dont see attachement of /LoadTest/something.jsp
>
> Martin-
>  ----- Original Message -----
>  Wrom: FPEGAUTFJMVRESK
>  To: users@tomcat.apache.org
>  Sent: Thursday, January 24, 2008 9:51 AM
>  Subject: Tomcat memory leak?
>
>
>  Hi,
>
>  I know it's weird, but I'm doing the simplest thing and can't believe
> there such a leak that I'm the first one to notice. I bet it's my bad,
> please someone explain, what I'm doing wrong...
>
>  I created the simplest JSP and when I load test it - tomcat (6.0.14,

> jre1.6.0_03) goes to 99.9% memory use in a few minutes (If I raise the 
> max
> heap size it takes longer, but it happens several minutes afterwards), 
> and

> when I stop bombarding it, it doesn't return to the usual percentage.
>

>  When I try the same with an HTML instead of a JSP, that returns 
> exactly

> the same - it stays on 12%-20%, cleans with the garbage collector, and
> returns to the usual percentage (about 12%).
>
>  I tried profiling with several plugins and external programs, but I
> really

> can't understand what's going on. They tell me that most of the 
> allocated

> bytes are "char[]", but I'm not sure who's the allocator and if there's
> anything I can do about it...
>
>  Attached are:
>  1. a test in python that bombards the tomcat,
>  2. a war with both something.jsp and something.html (they are both the
> same, but when I bombard something.html everything is ok, and when I do
> the
> same for something.jsp - the problem occurs)
>
>  Can anyone tell me what I'm doing wrong? does it happen to you too?
>
>  Thanks, Ofer.
>
>
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