My site was down for about 8 hours today for a bitter-sweet reason: it’s using too much of the shared host’s resources. That’s because the site’s getting more traffic (well, when it’s suspended from high CPU usage, it doesn’t get any traffic…), but that’s just 20K pageviews a week. I’m surprised, since really that’s not much at all.
I’ll probably upgrade the plan again and more importantly will review my wordpress plugins to see if there are any settings I can de-tune, so it doesn’t trigger the ‘high CPU and memory’ suspension again in the meantime.
If you’re geek enough to help, I’ve a file listing all the plugins I have installed.
I have just turned the page cache settings in Total Cache down to every 3 hours, it was more regularly before, and de-activated some forum software I had on a dev server. I also added CPU/query stats to the page footer. My host also tells me the site was using loads of RAM.