Limiting CPU on some processes on web server

[opendaddy at hushmail.com]

Hi!

I run this web app that depends on ImageMagick to process images and ffmpeg to process videos. These processes, unfortunately, consume 100% of my CPU, rendering my web app unusable (gateway timeout).

Tried `nice -n 19` but to no avail.

What other options do I have?

Thanks!

O.D.