[mythtv] backend from SVN 9761 bangs on mysqld

[Ed W]

>I think we were both wrong. Even with my patches mysql's load is over 
>30% while inserting events (without rescheduling). 
>

I haven't looked to see if they are ALL insert queries, but in general I 
see a big increase in mysql performance if I add a small query cache 
into the config.  It may be worth just adding a couple of MB of query 
cache and at least seeing what happens to your performance - it's such 
an easy change to make?

Ed W