[mythtv-users] High xorg CPU utilization on certain OTA channels

Steven Adeff adeffs.mythtv at gmail.com
Fri Sep 29 12:43:34 UTC 2006

On 9/29/06, AWC Lists <maillists at awcconsulting.com> wrote:
> I am running MythTV 0.20 ATRPMS on Fedora Cora 5.
> Quick specs:
> - P4 3gHz
> - 1 GB RAM
> - nVidia 6200 AGP video card w/xVMC turned on in MythTV
> - pcHDTV 5500 ATSC tuner
> - Two kWorld ATSC110 OTA ATSC tuners.
> I can watch most of my OTA ATSC channels just fine.  My typical CPU
> usage while watching live TV (according to "top" running in a ssh
> connection to the MythTV box) is 50-60% CPU utilization being used by
> mythfrontend and 5-10% being used by xorg.  So everything is perfectly
> fine.  These utlization levels are while watching HD content.
> The odd thing is two channels I use (Fox and ABC in Buffalo NY) cause
> xorg CPU utilization to spike to 50-60% CPU utilization. As a result
> these channels stutter when watching live TV.
> If I let Myth record the shows on these two trouble channels I can watch
> them later without a hitch.
> I am stumped as to what could cause this.
> Any ideas and or suggestion of what to look at?
> Anyone else experience this weird xorg spike in CPU utilization while
> watching certain channels?
> Thanks in advance.

Both 720p, try disabling deinterlacing and see what happens.

Before you ask, read the FAQ!
then search the Wiki, and this list,
Mailinglist etiquette -

More information about the mythtv-users mailing list