[debian-mysql] Bug#684096: Bug#684096:

[Nicholas Bamber]

On 06/08/12 22:54, Steven Ayre wrote:
> Please run the following command on your system as root:
> date -s "`date`"
> 
> A few weeks ago there was a leap second, which triggered a bug in a
> timer in the Linux kernel, the effect of which is that programs using
> the affected timer experience very high CPU usage. MySQL is one such
> program.
> 
> If this is the cause of your high CPU usage you should see an
> immediate improvement.
> 
> For more information on this leap second bug see http://goo.gl/PHHUS
> 
> _______________________________________________
> pkg-mysql-maint mailing list
> pkg-mysql-maint at lists.alioth.debian.org
> http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-mysql-maint

If you could nail down the timing a bit more that could be the most
likely. Also what version were you upgrading from?

Another possibility, though I don't quite remember anyone speciifcally
registering high CPU usage, is the new natve linux threads feature.

http://wiki.debian.org/Teams/MySQL/FAQ [Q4]