Anyone know why when editing a post with quick or full edit, the iowait jumps as high as 40%? This happens occassionally and even on a idle server. I've tested this many times, however when you post the message for the first time, this doesn't happen. :unsure:

Turns out that this happens on topics with man thousands of posts, probably need a faster disk.

Or a dedicated server if you are on shared hosting ;)