[mythtv-users] Mythbackend causing high load

[Ryan Steffes]

On 6/15/06, Jeff <jeff3140 at gmail.com> wrote:
>
> I'm having the same kind of problem but with a PVR card. I find that
> the box can be running for some undetermined amount of time and
> recordings will be fine. At some point, occasionally in the middle of
> a recording, mythbackend will go up to about 95-100% cpu and stay
> there. I will start getting the IOBOUND errors from the write thread
> and the video will stutter on playback.
>
> Sometimes the problem doesn't show up for a few days, sometimes it
> shows up immediatly after a reboot.
>
> I was wondering if only Athlon users were running into this but I
> noticed a few Pentium people seem to have the problem as well. This
> system was happy when it was running 0.16 and the problem started when
> it was upgraded to 0.19. Of course everything else got upgraded at the
> same time.
>
> I have disabled APIC
> (
> http://collectivity.goof.com/articles/2006/04/17/mythtv-high-cpu-usage-resolved-for-the-time-being
> )
> and it appeard to help at first but the problem has returned.




Do you, by any chance, have a slave to offload the transcode onto?  Try
disabling transcode jobs on that backend, and see if it comes back.  Mine
hasn't since then, even though it's a less than ideal fix.
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