On Aug 1, 2006, at 9:24 AM, Richard Morse wrote:
Hi! I recently updated MySQL to version 5.0.22 using the ports
system (portupgrade -r -R mysql-\*). Previous to this, MySQL was
behaving perfectly normally. Since the upgrade, I have found that
every so often -- sometimes two or three times a day, sometimes
every other day, but no more often than that -- one of the
databases MySQL is hosting starts misbehaving, MySQL starts
climbing in processor usage, and I have to restart MySQL to
recover. By "misbehaving", I mean that some subset of queries to
this database start not returning -- they take forever. By
climbing in processor usage, I mean that my load averages, which
normally sit around 0, start going up to 3, 5, even 7.
- How can I determine what query it is that is causing this to
happen? I have turned on the log files by adding the following
line to /etc/rc.conf:
Hi! Since this time, I have, I think, found what query is causing
SELECT u.*, s.* FROM users u INNER JOIN sessions s ON u.uid = s.uid
WHERE s.sid = "d9fe25949f79f2c767a0d237b4fdf841" AND u.status < 3
LIMIT 0, 1
How can I determine _why_ this is causing MySQL to hang/enter some
kind of infinite loop?
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