[Mono-list] Web app performance profiling

[Gonzalo Paniagua Javier]

On Mon, 2006-07-31 at 17:20 +0300, Andrey Tkach wrote:
> Hello,

> We have one web application, with some performance issues while
> testing it on Suse Linux 10.1 and mod_mono 1.1.15. But on .Net, IIS
> results are much better. I supposed to make a decision whether such
> platform suitable for our middleware. Are there some web-resources
> about testing web-applications performance on mono?
> 
> I feel I need to profile something to see what makes such delays. What
> is the right way to profile mod-mono-server?

I assume you're letting mod_mono start mod-mono-server. The steps to
profile it are as follows:
     1. Start apache.
     2. Run 'ps aux' and copy the command line used to run
        mod-mono-server.exe
     3. Stop apache
     4. With the same user that runs apache, run the command line copied
        in 2 adding the '--profile' parameter to mono.
     5. Start apache.
     6. Do a few requests (they will take a lot to process).
     7. Stop apache
     8. mod-mono-server will stop and you'll get profile output.

Note that when --profile is enabled, mono is *extremely* slow. Do as
many request as you need to get a result that excludes start up stuff.

-Gonzalo