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Comment by victorNicollet | Hacker News Reader

No, y'all managed to kill me server >_< I'll try to bring it back from the dead.

EDIT: it's back (or at least, looks like it). The traffic is being drained to a static copy of the page, so don't be surprised if comments you post on that page don't appear.

I'll be back with an actual (cache-based) solution soon, hopefully.

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I couldn't resist asking: is the article hosted by an OCaml application? ;-)

Interesting question :P, but no: it's a vanilla 3.0.x Wordpress on a RPS server. The performance issue appears to be the server swapping like mad.

http://wordpress.org/extend/plugins/wp-super-cache/

http://rimuhosting.com/howto/memory.jsp

Scroll down to RESOLVING: HIGH APACHE MEMORY USAGE

EDIT: I realized after I posted that simply posting two links might seem snarky. I don't mean to be. I know these links because I've been in the same spot you are. I think we all have. That's how we learn :)

Thanks for the links, I actually applied the second one on my own, without much success. Right now, I'm looking at a server with no swapping, normal memory usage, low processor usage, no IOwait, but serving HTTP requests at the speed of a dead snail nailed to an ice cube.

I'll try to install the cache plugin as soon as I retrieve control over my server.

To get a picture of what's going on, try logging in to your shell and install htop. It's a great little utility that shows you load averages, memory usage (broken down in to used, buffered, and cached memory in real time. Very handy.

Adding on to bradleyland's advice: http://www.kalzumeus.com/2010/06/19/running-apache-on-a-memo...

Might I take this opportunity to recommend:

http://www.cherokee-project.com/

as close as you'll get to Zeus Web Server for free.

Caching!

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