r
To: Tomcat Users List
Sent: Tue, December 15, 2009 12:42:01 PM
Subject: Re: Limit user sessions in tomcat
2009/12/15 Chetan Chheda
> Is there a 3rd party tool available to manage tomcat sessions and kill
> them once they go rogue?
>
> Can I just check two pieces of terminology
Andre,
We have a vast user population thats geographically dispersed, so implementing
something thru the system would be the favourable approach..
Can you point me to links on the web that explain the add on modules and their
implementation?
All,
Is there a 3rd party tool available to
Hello,
We frequently have situations where a user has brought down a tomcat
entirely by himself by running the same transaction multiple times because the
response was not quick enough.
Is there a way through configuation of tomcat and mod_jk to control the
number of concurrent transac
Hello folks,
I have 2 resource hungry processes that need to run on 2 separate tomcats.
I have setup mod_jk to load balance between the 2 tomcats, but sometimes they
end up on the same one. Is there a way to guarantee they run on separate
tomcats?
Is there an option to do "load" ba
List
Sent: Friday, June 12, 2009 11:11:44 AM
Subject: RE: What to upgrade?
> From: Chetan Chheda [mailto:chetan_chh...@yahoo.com]
> Subject: Re: What to upgrade?
>
> I reduced it to -Xmx1024m -Xms1024m -Xmn400m and was able to startup.
> Is there a heap size limitation?
What platfor
From: David Kerber
To: Tomcat Users List
Sent: Wednesday, June 10, 2009 8:58:37 PM
Subject: Re: What to upgrade?
Chetan Chheda wrote:
> We are going to regression test it in non - prod environments. I agree with
> going to the latest version, but our application i
We are going to regression test it in non - prod environments. I agree with
going to the latest version, but our application is only supported on 1.4.2 So
I am thinking 1.5 would be a smaller jump than 1.6.
Chetan
From: Christopher Schultz
To: Tomcat Users L
Our management has directed us to upgrade our JRE to 1.5 from 1.4.2 because
they have "heard" that 1.5 has better memory management features. I am doing my
due diligence to present a plan on what it will take to get us there.
The question is how do I approach this ...
We have apache(2.0.59), T
What does your Apache access_log say at the time when tomcat threads are
exhausted ?
I had a very similar issue in my environment. The culprit turned out to be
JkMount options. Apache was sending all requests, whether it is for static or
dynamic content to tomcat. At the same time my tomcats l
I forgot to add we are using JDK1.4
From: Leon Rosenberg
To: Tomcat Users List
Sent: Saturday, June 6, 2009 7:52:16 AM
Subject: Re: Application monitoring
On Sat, Jun 6, 2009 at 4:19 AM, Chetan Chheda wrote:
> All,
>
> What are you using for p
All,
What are you using for production monitoring and alerting for JVM & apache
based applications? I am referring to proactively monitoring and alerting of
apache utilization(workers, requests etc), tomcat utilization(threads, heap,
etc) , tracking Java methods, JSPs , servlets and also t
ith knowledge of JSTL should have no problem incorporating the above
snippet. If you have trouble with the above - seek a trusted consultant for
help. The money will be well spent.
-Tim
Chetan Chheda wrote:
> Thanks Tim and Chuck.
> Tim,
> Is this something a novice programmer like
29, 2009 1:59:01 PM
Subject: RE: User tracking/monitoring
> From: Chetan Chheda [mailto:chetan_chh...@yahoo.com]
> Subject: User tracking/monitoring
>
> Is there anyway we can add the tomcat sessionID to their page so
> that they can tell us where they are?
Besides adding it to some
All,
In our production environment we load balance across 4 tomcats that are
split among 2 physical servers. This is a high traffic website and we get calls
from users for a number of support issues and for most of these issues the
first step is to find out what tomcat instance they ended
only a web tier can reside.
Chetan
From: "Caldarale, Charles R"
To: Tomcat Users List
Sent: Wednesday, May 27, 2009 11:38:11 AM
Subject: RE: Tomcat not closing threads -- SOLVED ??
> From: Chetan Chheda [mailto:chetan_chh...@yahoo.com]
> Su
NED MESSAGE-
Hash: SHA1
Chetan,
On 5/26/2009 2:47 PM, Chetan Chheda wrote:
> After some digging thru config files setup by the vendor, I think I
> might have found the root cause ..Correlating the access_log and tomcat
> logs, I found out that tomcat threads were shooting up when
All,
Can you recommend some of them? Topics that I am looking for are :
Mod_jk configuration
Tomcat connectors
Apache webserver
For high traffic scenariors with a performance tuning & monitoring perspective
..
Thanks,
Chetan
our environment.
From: André Warnier
To: Tomcat Users List
Sent: Tuesday, May 26, 2009 3:20:06 PM
Subject: Re: Tomcat not closing threads -- SOLVED ??
André Warnier wrote:
> Chetan Chheda wrote:
>> After some digging thru config files setup by the ven
file with
tomcat down.
my question is, how does the ajp13 connector interpret a gif file/static
content request as opposed to a jsp request?
Chetan
From: Chetan Chheda
To: Tomcat Users List
Sent: Monday, May 18, 2009 5:53:07 PM
Subject: Re: Tomcat not
Schultz
To: Tomcat Users List
Sent: Friday, May 22, 2009 8:37:52 AM
Subject: Re: Running out of tomcat threads - why many threads in RUNNABLEstage
even with no activity
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Chetan,
On 5/21/2009 2:08 PM, Chetan Chheda wrote:
> I am following t
I am following this thread with great interest. I have a similar issue as
Vishwajit and have resorted to adding the connectionTimeout to get rid of a
large number of RUNNABLE threads.
But mod_jk does not like tomcat threads timing out and logs the message
"increase the backend idle connection
ni.
> >
> >
> >
> >
> > Date: Mon, 18 May 2009 07:43:04 -0700
> > From: chetan_chh...@yahoo.com
> > Subject: Re: Tomcat not closing threads
> > To: users@tomcat.apache.org
> >
> >
> >
> > Our network team is already enga
engaged and looking into this. We had several
> instances of tomcats locking up today. I have attached one such thread dump
> here ..
>
> Can some of you pls take a look and point me into the right direction?
>
>
>
>
>
>
> From: rad muthu
> To: Tomc
: Christopher Schultz
To: Tomcat Users List
Sent: Monday, May 18, 2009 12:18:22 PM
Subject: Re: Tomcat not closing threads
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Chetan,
On 5/18/2009 10:43 AM, Chetan Chheda wrote:
> Our network team is already engaged and looking into this. We had
> s
noop command in solaris. After tuning the TCP parameters the issue got
resolved.
You might also need to something like that.
Thanks
Krish
On Wed, May 13, 2009 at 11:57 AM, Chetan Chheda wrote:
> I guess I need to ask my question again. Im primarily an
HP-UX
> administrator and recently
All,
We are using -XX:+UseParNewGC option in our Tomcat JVMs with
-XX:ParallelGCThreads=16 on a 6 CPU system. What is the real impact of having a
higher number of GC threads than the number of CPUs? With the 2 tomcat JVMs
running on the box, would you recommend changing it to 6 for each to
7:00 PM
Subject: RE: Tomcat not closing threads
> From: Chetan Chheda [mailto:chetan_chh...@yahoo.com]
> Subject: Re: Tomcat not closing threads
>
> I managed to get a thread dump during one such tomcat hangs. Most of
> the threads are in the following status ...
The ones you sho
Runnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:534)
________
From: Chetan Chheda
To: Tomcat Users List
Sent: Tuesday, May 12, 2009 1:32:16 PM
Subject: Re: Tomcat not closing threads
Just wondering if anyone got my message below?
_
Just wondering if anyone got my message below?
From: Chetan Chheda
To: users@tomcat.apache.org
Sent: Tuesday, May 12, 2009 12:03:49 PM
Subject: Tomcat not closing threads
Hello,
I am having an issue where I could use some clarity.
We are using apache
Hello,
I am having an issue where I could use some clarity.
We are using apache 2.0.59 and tomcat 5.5. We are having some growing pains
with vendor specified modjk and tomcat settings.
1. Tomcat opens up a number of threads during some transactions but does not
close them. Is this because the
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