[mythtv-users] Jumpy playback with PVR-250?

Scott Pouliot spouliot at scpsoftware.net
Fri Jan 16 15:39:51 EST 2004

Nvidia drivers are installed and in use....no change

Nice -10 mythfrontend...no change  :-( 

-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of David jeske
Sent: Friday, January 16, 2004 1:46 PM
To: Discussion about mythtv
Subject: Re: [mythtv-users] Jumpy playback with PVR-250?

-- Scott Pouliot wrote:
> Alright....well it's definitely not a CPU issue then. I've got a 
> console window running on Desktop 1 in KDE...and Myth playing Live TV 
> on Desktop 2. I can hear it skipping, but the CPU usage is as follows:
> 2.7% user 1.7% system 0.0% nice 0.0% iowait 96.6% idle

When I first brought up mythtv, it would stutter once every 2-3 minutes,
even though it was 80% idle.

I just changed the command I used to run the frontend to:

nice -10 mythfrontend

I think some of the services running as root (i.e. mysql,
mythbackend) like to take extra cpu time, even when they don't need it to
remain real-time. The frontend on the other hand needs higher priority
scheduling because it has to do work on a strictly periodic basis.
See if boosting the priority of the frontend fixes your problem.

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