Going crazy trying to figure this one out.
Starting a few days ago, PHP started hogging a lot of server time.
This is NOT the same problem as last time, which involved a corrupt database which I eventually found on my own.
Here are what I believe to be the facts:
- Not a DOS attack
- Does not seem to be database corruption. mysqld is not using an unusual amount of CPU, PLUS this is happening on BOTH forums running on this server (PFA and one other), and they have separate databases
- php process is hogging CPU time. It's not one particular PHP call. Sometimes it's showthread.php, sometimes it's forumdisplay.php, sometimes it's others.
- Load average constantly around 2-3. Before this problem, it was well below 1.
- Did not install anything new recently to bring this on, though it's possible something auto-updated without my knowledge
- Dedicated VPS machine (i.e. can't blame on shared hosting)
Basically what would cause these php calls to suddenly get slow and hog CPU time, when last week with the identical setup, everything was fine?
Ideas?