[mythtv-users] stutter while recording two programs at once

[Steven Adeff]

On 9/10/06, Brad DerManouelian <myth at dermanouelian.com> wrote:
> On Aug 29, 2006, at 6:43 PM, Judd Tracy wrote:
> > Try taking a look at this:
> > http://www.mythtv.org/wiki/index.php/PCI_Latency
> >
> > Judd
>
> /sbin/lspci -v
> tells me:
> 00:07.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller
> (rev f3) (prog-if 85 [Master SecO
> PriO])
>          Subsystem: ASUSTeK Computer Inc.: Unknown device 815a
>          Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 225
>          I/O ports at 09f0 [size=8]
>          I/O ports at 0bf0 [size=4]
>          I/O ports at 0970 [size=8]
>          I/O ports at 0b70 [size=4]
>          I/O ports at d800 [size=16]
>          Memory at ad002000 (32-bit, non-prefetchable) [size=4K]
>          Capabilities: <available only to root>
>
> 00:08.0 IDE interface: nVidia Corporation CK804 Serial ATA Controller
> (rev f3) (prog-if 85 [Master SecO
> PriO])
>          Subsystem: ASUSTeK Computer Inc. K8N4-E Mainboard
>          Flags: bus master, 66Mhz, fast devsel, latency 0, IRQ 233
>          I/O ports at 09e0 [size=8]
>          I/O ports at 0be0 [size=4]
>          I/O ports at 0960 [size=8]
>          I/O ports at 0b60 [size=4]
>          I/O ports at c400 [size=16]
>          Memory at ad001000 (32-bit, non-prefetchable) [size=4K]
>          Capabilities: <available only to root>
>
> So I did this:
> [mythtv at mythtv ~]$ sudo /sbin/setpci -v -s 00:07.0 latency_timer=b0
> 00:07.0:0d b0
> [mythtv at mythtv ~]$ sudo /sbin/setpci -v -s 00:08.0 latency_timer=b0
> 00:08.0:0d b0
>
> But /sbin/lspci -v still tells me latency 0 for both devices.
>
> I feel dumb that I can't read directions and get this to work how I
> think it will work.

My PATA/SATA interfaces are also set to latency=0. My onboard SATA is
set to 0 and I can't change it, but my PCI PATA card default sets to
32, which causes all sorts of problems, so I force the PATA card to 0
as part of my mythbackend startup script (they control my RAID10
recordings array). I've not noticed any issues with this.

-- 
Steve
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