[mythtv-users] MythBackend Suddenly swamping CPU on system

Patrick patman at aracnet.com
Sun Jul 1 03:03:27 UTC 2012

On Sat, Jun 30, 2012 at 08:08:55PM -0500, Ben Kamen wrote:
> Hey all,
>  I have a server I built with CentOS 6.x and Myth 0.24 -- so far so good. Nothing out of the ordinary -- and with other priorities, I haven't even begun using it yet.
> Empty schedules -- just the backend runs and pretty much does nothing.
> Today it started swamping the CPU to 100% (AMD Phenom X4 640)...
> top confirms its using everything not being used by everyone else. If I stop the backend, the pegged CPU's go back to something normal.

My load got to over 30 :-(

I see mysqld sucking CPU time, more than 100% (it must be multithreaded).

I also hit this on my laptop, where I'm *not* running mythtv, but I'm
running Fedora 15 there too.


mysql     1662  1468  5 Jun29 ?        01:28:36 /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/log/mysqld.log --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/lib/mysql/mysql.sock

mysql    28047 27853 74 19:57 pts/3    00:03:17 /usr/libexec/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --log-error=/var/log/mysqld.log --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/lib/mysql/mysql.sock 

I found this, but haven't been able to try it (so far):


I'm just going to reboot for now :-(

-- Patrick Mansfield

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