[mythtv-users] small mythtv freezes ?

[Jelle Kalf]

It doesn't seem that it's the issue:

rrroot root # hdparm -t /dev/hdg
/dev/hdg:
 Timing buffered disk reads:   66 MB in  3.01 seconds =  21.93 MB/sec 

I get enough speed as you can see.


-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Ken Bass
Sent: maandag 24 november 2003 23:36
To: Discussion about mythtv
Subject: Re: [mythtv-users] small mythtv freezes ?


On Mon, 24 Nov 2003, Tako Schotanus wrote:
> 
> No, it has nothing to do with one or two stutters after a channel 
> change, that's normal. This is about continuous stuttering that occurs 
> every second or so and is very slight but enough to be annoying. The 
> console is filled with messages about prebuffering pauses.
> 
> For me this only happens after a certain time, never in the beginning 
> of a recording.
> 
> CPU usage is low enough (mostly around 30%) so that should not have 
> anything to do with it.
> 
> -Tako


What is your hard disk performance like? I think you can figure that out by
running hdparm; such as:

"hdparm -t /dev/sda"

and you will get:

/dev/sda:
 Timing buffered disk reads:  64 MB in  2.45 seconds = 26.12 MB/sec

My guess is that if your CPU util is low, your hardisk might be the
bottleneck. What is that number and if it is low it could be due to DMA not
enabled on your harddisk or poor hard disk performance.