I'm really not sure what to try next. ps -aux shows MySQL as hogging
the CPU, not PHP or Terminal:
When this happens, do a 'SHOW PROCESSLIST' in mysql to see what it's
doing.
I have, and I can't see anything unusual. There are a few scripts
that loop with very slow overhead (with sufficient sleep(), etc.)
plus a few outside HTTP requests. Nothing unusual.
Incidentally, yesterday, when MySQL went to 80-90% again after a
week, I let it stay there while I poked around MySQL (doing the
above) and the OS to see if there are some magical limit that I might
be breaking. So it the server ran with MySQL at 80-90% CPU for about
eight hours. Everything still worked fine, scripts ran, the database
was available. That's the thing about this problem--it's not a show-
stopper, it's just really strange. And I can't figure its source.
After not finding anything, I decided restart the script. So I stop
the [seemingly offending] script and wait for CPU load to return to
normal. It doesn't. MySQL remains at 80-90%. Even with all the other
processes turned off that call MySQL and Web Server off, MySQL
remains at 80-90%. Yet SHOW PROCESSES lists no processes, just the
"show processlist" command I issue. With the load still high, I
attempted to "Stop" MySQL via the Adminstrator control panel. I
waited a few minutes. It doesn't shutdown. Finally--and I really hate
doing this, because it sees dangerous to data (is it?)--I issue a
kill -9 command to its process. Then it starts fine, I start the
script in question, and everything is back to normal.
...Rene
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