[Catalyst] Slow fastcgi

[Joel Bernstein]

On 4 May 2009, at 09:19, Octavian Rasnita wrote:
> I have started using fastcgi with a Catalyst app, using it as an  
> external server, but I've seen that it works very slow and many  
> requests give a timeout error and display a 500 error because of this.
> [snip]
> Here is the configuration for the worker MPM which I use now. I used  
> it when I was using mod_perl too, but it worked much more faster  
> (without using another front-end server).
>
> <IfModule prefork.c>
> StartServers       8
> MinSpareServers    5
> MaxSpareServers   10
> ServerLimit  56
> MaxClients       56
> MaxRequestsPerChild  1000
> </IfModule>
>
> Please give me some hints about what I could configure to make  
> fastcgi work better.

What are you requesting? How long does it take? How many parallel  
requests and how is this affecting response time? What are you using  
to measure? How long does the same request load take when you deploy  
the identical app on mod_perl? Is mod_perl loaded into the Apache that  
you use to proxy to the FastCgiExternalServer? Does your machine have  
adequate RAM for the Apaches and the Perl processes? Please give lots  
more detail about your performance observations and we may be able to  
better advise how to tune Apache etc. Currently without any numbers  
it's far too vague, and we need to remove some of the possible  
variables (or at least sanity-check them) to narrow down the problem  
scope.

/joel