Re: Threading & PHP

On Sun, 25 Jan 2004, Galen wrote: > I'm not 100% sure what you're talking about, to be honest. I think I'm > in the second half of the people... :) > > As far as I can tell, Apache runs as many processes (httpd) as needed > on my local machine. As far as my server, I haven't seen this behavior, > but I admit I don't sit there watching top all the time unless > something is broken, and even then, I usually can't fix whatever is > broken. I don't have root or other special access to the server - it's > a shared machine, pretty lightly loaded most of the time. I do have SSH > access. Processor affinity isn't nearly as complex as threading; it means to set up a system whereby certain processes run on a particular processor set; e.g., all httpd processes run on CPU set 1, all image processing tasks run on CPU set 2. That way CPU set 1 can continue servicing httpd requests without being bogged down by the CPU intensive tasks running on CPU set 2. If pset is available as a command on your multiple CPU machine then you can probably set up processor affinity.