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Date: Fri, 2 Feb 2007 03:44:12 +0530
From: "Gaurav Kushwaha" <gaurav.kushwaha@gmail.com>
To: "Tomcat Users List" <users@tomcat.apache.org>
Subject: Re: How do I increase performance on Tomcat?
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	 <327858f40701290846p6bbaad88j2aedc7dbdc4931cb@mail.gmail.com>

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Thanks everyone for the help. I found the problem. Few of my threads were
not returning to the pool and hence most of the requests were being queued
up.

Gaurav Singh Kushwaha
http://www.chakpak.com

Ph: +91-9880101496
Bangalore, India.


On 1/29/07, Leon Rosenberg <rosenberg.leon@googlemail.com> wrote:
>
> On 1/29/07, Nelson, Tracy M. <Tracy.Nelson@nelnet.net> wrote:
> > | From: Gaurav Kushwaha [mailto:gaurav.kushwaha@gmail.com]
> > | Sent: Monday, 29 January, 2007 06:11
> > |
> > |     I have an application that has been working fine for last half an
> year
> > | or so. Recently the load has started increasing and the time it takes
> to
> > | serve a request is going up significantly. When I look at the resource
> > | utilization(memory and CPU), it hardly shows an increase. Garbage
> > | collection
> > | is also not the culprit. What might be causing this performance hit ?
> >
> > The first step is to measure the different components of your app to see
> > where the degradation is.  Is it an external resource (database, message
> > server, etc.)?  Is it internal?  Where is the app spending all its time?
> >
> > If you can, get a performance analysis tool like JProbe.  Otherwise,
> maybe
> > you could instrument your code with simple timestamping of method
> entry/exit
> > points.  The first step to solving performance problems is always
> finding
> > out where the performance is going...
>
> JProbe is hardely useable for production servers. Try to use something
> lightweightier.
>
> regards
> Leon
>
> >
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