trying to figure out CPU usage

Hi all,

I’ve got an ongoing issue with CPU usage on my website that I’m trying to figure out. I’ve got wp-cache installed, and the expire time set to 99999. Also, Bad Behavior is installed and blocking a lot of bots from what I can tell. Still, I get these intermittent CPU spikes.

The site is pretty large, roughly 7000 posts. I’m thinking much of it might be attributable to the feed getting hit hard. Is there any way to make sure that the feeds are being cached? They don’t seem to be in the cache directory in wp-content.

Google analytics shows about 1500 page views a day. Awstats is way more, but it still doesn’t seem like enough traffic to cause this much CPU usage. Total bandwidth is about 1 gig per day.

Is wp-cron.php still an issue in WP 2.7? I’ve seen old threads for disabling it, but the wp-cron.php file itself seems to have changed quite a bit. There aren’t multiple rows of cron entries in wp_options that would suggest crons that aren’t running. Is it still worth disabling wp-cron to reduce CPU?

Any help would be appreciated, or any ideas of how to go about tracking down the culprit. Thanks.