Mailing List Archive

Just out of curiousity, try running top and increase the speed (hit s, set
to .3) Then run hdparm -t /dev/hd?. Does it spike (System) pretty
heinously? Mine benches just as well as yours does, but it seems that my
chipset (AMD 760) has some crummy IDE drivers...the CPU spikes in the 60's
just when doing hdparm. So I'm thinking my issue is now the onboard
controller not being up to the task of writing that much data to the disc
without chopping out the CPU in the process.

Might be worth playing with some of the hdparm params--like unmasqirq,
32bit I/O, write caching, and the acoustic management?

----- Original Message -----
From: "Steven Gill" <steven.gill@verizon.net>
To: "Discussion about mythtv" <mythtv-users@snowman.net>
Sent: Thursday, February 06, 2003 7:48 PM
Subject: [mythtv-users] A little jittery


> I thought maybe you guys could help me out:
>
> I have a celeron 1.1a GHZ processor and a Marvel G200 card. I have
Video set a decimation 2x2 and the video looks great. If I let it play
Live TV for about 5-10 minutes I get audio cut-outs and some slowdowns.
I've run top and I am only using in general 27-40% CPU. I have nothing
else running and have a decent sound card SB Live.
>
> I've already checked for some things that typically cause problems:
>
> - DMA turned on on Hard drive hdparm -t reports back 45 MB/s
>
> - Using alsa 9.0rc6
>
> - Made sure arts is killed
>
> - Running X at 800x600 (this does the same at 640x480)
>
> - This happend with MP3 compression and uncompressed audio
>
> The only other thing I can attribute it to is the motherboard which is a
VIA apollo dual processor board. I have heard issues with the South
Bridge. I am using a stock 2.4.19 kernel, and I wonder if I should look
for any patches for via chipsets. What do you think?
>
> Steve
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users@snowman.net
> http://www.snowman.net/mailman/listinfo/mythtv-users

Your right. doing a hdparm -t with top puts me up to 80% cpu for this.
This is pretty lame considering a 1.1 GHZ processor. Oh well, maybe
I'll tweak the settings to see what I can do.

Steve

On Fri, 2003-02-07 at 04:45, William Preston wrote:
> Just out of curiousity, try running top and increase the speed (hit s, set
> to .3) Then run hdparm -t /dev/hd?. Does it spike (System) pretty
> heinously? Mine benches just as well as yours does, but it seems that my
> chipset (AMD 760) has some crummy IDE drivers...the CPU spikes in the 60's
> just when doing hdparm. So I'm thinking my issue is now the onboard
> controller not being up to the task of writing that much data to the disc
> without chopping out the CPU in the process.
>
> Might be worth playing with some of the hdparm params--like unmasqirq,
> 32bit I/O, write caching, and the acoustic management?
>
> ----- Original Message -----
> From: "Steven Gill" <steven.gill@verizon.net>
> To: "Discussion about mythtv" <mythtv-users@snowman.net>
> Sent: Thursday, February 06, 2003 7:48 PM
> Subject: [mythtv-users] A little jittery
>
>
> > I thought maybe you guys could help me out:
> >
> > I have a celeron 1.1a GHZ processor and a Marvel G200 card. I have
> Video set a decimation 2x2 and the video looks great. If I let it play
> Live TV for about 5-10 minutes I get audio cut-outs and some slowdowns.
> I've run top and I am only using in general 27-40% CPU. I have nothing
> else running and have a decent sound card SB Live.
> >
> > I've already checked for some things that typically cause problems:
> >
> > - DMA turned on on Hard drive hdparm -t reports back 45 MB/s
> >
> > - Using alsa 9.0rc6
> >
> > - Made sure arts is killed
> >
> > - Running X at 800x600 (this does the same at 640x480)
> >
> > - This happend with MP3 compression and uncompressed audio
> >
> > The only other thing I can attribute it to is the motherboard which is a
> VIA apollo dual processor board. I have heard issues with the South
> Bridge. I am using a stock 2.4.19 kernel, and I wonder if I should look
> for any patches for via chipsets. What do you think?
> >
> > Steve
> >
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users@snowman.net
> > http://www.snowman.net/mailman/listinfo/mythtv-users
>
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users@snowman.net
> http://www.snowman.net/mailman/listinfo/mythtv-users