I've been having issues with member hosted sites. Especially during peak traffic, their site becomes slow, eventually to total inaccessibility.

When I restart httpd, their sites go back to normal speed. But then slow down again within 2 minutes. So I pretty much have to restart httpd every 2 minutes to keep member sites from running.

But today I found the real cause.

As soon as I stopped MySQL, their sites immediately started working again, and never again slowed down, until I started MYSQL again.

There's no load or memory change while sites slow down and are fast.

All I know is MYSQL (v5) is causing this to happen.

But I really can't see how httpd and mysql can be related?

Can anyone help me on this. What should I do to fix this?