[mythtv-users] setpci [was Re: My HDTV woes]
rtsai1111 at comcast.net
Fri Apr 7 23:03:00 UTC 2006
On Mon, Apr 03, 2006 at 01:50:53PM -0400, Daniel Kristjansson wrote:
> On Mon, 2006-04-03 at 11:02 -0500, leland sindt wrote:
> > > Also if you have an nVidia or ATI card lower the pci latency
> > > timer to 60 with setpci (see also lspci). My command:
> > >
> > > setpci -v -s 01:00.0 latency_timer=60
> > Can you provide some justification/evidence for changing the
> > latency timer for your nVidia card? What have you seen to show
> > that it does not need the full 'ff' value?
> You don't need the full bandwidth for the graphics when running
> mythtv, and allowing the video card to monopolize the PCI bus
> prevents other high bandwidth devices like your HDTV card from using
> the bus. You may not need to do this, but it can help, especially if
> you have multiple HDTV cards.
> I've found that this makes for a more responsive system, even when
> you are playing a graphics intensive game. Though absolute fill
> rates suffer a few percentage points.
Daniel, do you have an AGP or PCI (or PCI-E) video card? I'm thinking
of the comment in this post that possibly implies this "setpci" trick
might not help for AGP video cards (not that I have any expertise in
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 189 bytes
Desc: Digital signature
Url : http://mythtv.org/pipermail/mythtv-users/attachments/20060407/e354ca0a/attachment.pgp
More information about the mythtv-users