Forum: Mongrel Reducing Memory Footprint of Mongrel Handlers

Dear Members,
Mongrel Handlers seem to take up about 110 MB for each instance and
sometimes upto 20% cpu usage on an 8 core system..

Though this has a lot to do with the application, any suggestions for
improvement at the software stack level? [especially for the RAM?]

regards

Asif Ali

Asif Ali <azifali@gmail.com> wrote:
> Dear Members,
> Mongrel Handlers seem to take up about 110 MB for each instance and
> sometimes upto 20% cpu usage on an 8 core system..

> Though this has a lot to do with the application, any suggestions for
> improvement at the software stack level? [especially for the RAM?]

Avoid slurping.  Don't read large files into memory all at once,
LIMIT all your SELECT statements.  That's the biggest problem
I see in all sorts of apps.

Other than that there could be a lot of app specific things...
Go by process of elimination and figure out where/when/if memory
jumps are taking place and even rip out chunks of code
that are suspect :)

Eric,

Thank you for those suggestions. We are reviewing those select
statements...again.

But do some patches [like the forking patch] help?

Asif Ali

Nope, that looks about normal, based on my experience. Our app would
consume 80Mb once mongrel had started, and would jump to well over
120Mb after serving a request.

Asif Ali wrote:
> Dear Members,
> Mongrel Handlers seem to take up about 110 MB for each instance and
> sometimes upto 20% cpu usage on an 8 core system..
> 
> Though this has a lot to do with the application, any suggestions for
> improvement at the software stack level? [especially for the RAM?]

try the MBARI patches, if you're using 1.8.x
Cheers!
-=r