[mythtv-users] A little jittery

[Steven Gill]

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 at verizon.net>
> To: "Discussion about mythtv" <mythtv-users at 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 at snowman.net
> > http://www.snowman.net/mailman/listinfo/mythtv-users
> 
> 
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at snowman.net
> http://www.snowman.net/mailman/listinfo/mythtv-users
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part
Url : /pipermail/attachments/20030207/d893a101/attachment.bin