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

[Douglas Beck]

I've got another direction for you.  Check your log files & look for 
errors.  I was having a problem with playing recordings studdering but 
not Live TV.  I checked my log files and found errors.  It turns out my 
recordedmarkup table in the myth database was corrupt and needed to be 
remade.  And boom...solved.

Scott Pouliot wrote:

>Yup...tried that one.  Slowed drive access from 56MB/sec down to 13MB/sec
>Not a good sign  ;-) 
>
>-----Original Message-----
>From: mythtv-users-bounces at mythtv.org
>[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Lance Tost
>Sent: Friday, January 16, 2004 4:27 PM
>To: Discussion about mythtv
>Subject: RE: [mythtv-users] Jumpy playback with PVR-250?
>
>On Fri, 16 Jan 2004, Scott Pouliot wrote:
>  
>
>>Nvidia drivers are installed and in use....no change
>>
>>Nice -10 mythfrontend...no change  :-(
>>    
>>
>
>
>Was hdparm -d1 already mentioned?
>
>
>  
>
>>-----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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