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Date: Wed, 19 Sep 2012 19:25:18 +0100
Message-ID: <2950584534056023709@unknownmsgid>
Subject: Re: Profiling tomcat 7 on ubuntu with java profiler
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On 17 Sep 2012, at 13:55, Ragini <raginippatel@gmail.com> wrote:

> Hi experts,
>
> I profile tomcat with a java profiler.

I expect that a Java Profiler is the best way to do that.

> The profiler runs java agent and
> profiles the tomcat server.

So you said. That's awesome dude.

> So I have created setenv.sh and put java
> options to it. so far it is working fine. I start the server, then I run
> the web application in the browser and then I stop the server by
> shutdown.sh. After I execute shutdown.sh, my profiler dumps the output.
> This output shows all the executed java methods in xml format. It
> actually shows the sequence in which they were executed. Pl find the
> attached file to see how the profiler generates the output. This was
> generated by running just one test.jsp page which contains the method
> "addnum".
>
> In the output, I have noticed that the main class which is responsible
> to execute jsp page is "Lorg/apache/jsp".

Uhhh, which profiler are you using? That doesn't make sense.


> But I am not sure if there are also other classes which are responsible f=
or this.

...


> I am curious to know this. In my profiler I have an option by which I can=
 exclude classes
> which I dont want to profile.
>
> I am basically interested in profiling all user defined methods of jsp
> pages and of java classes. (I want to profile a web application which
> has java classes and jsp pages as well).

Good plan.

> I would not like to profile the classes of apache which are dependent on =
time (like threads are time dependent).

Uhh, if the committers come up with some Tomcat code that isn't depend
on time I extend an immediate offer of unlimited beer. (Before you
start, I'll win this one.)


> The reason for this is, it gives me different profiles for
> exactly two same runs. Which I strictly don=E2=80=99t want.

Sun spots?

> so I would like to have your opinions on,
>
> 1) Are the methods of org/apache/jsp class and time dependent ? Is there
> any chance that I get different profiles for exactly two same runs ?

Unless your Tomcat server is in a Faraday cage for a start, yes.


p

> (I don=E2=80=99t have any option to include the class which needs to be p=
rofiled
> in my profiler. So if I want to test the above I have to specify all
> other classes except org/apache/jsp in my exclusion list which is very
> time consuming. If I am sure that methods of apache/jsp/* classes are
> not time dependent, I can do that.


>
> I need your help regarding this.
>
> Thanks.
>
> Richa
> <tomcat_output.cct.xml.gz>
>
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