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

Steven Adeff adeffs.mythtv at gmail.com
Mon Sep 11 14:32:54 UTC 2006


On 9/11/06, Brad DerManouelian <myth at dermanouelian.com> wrote:
> On Sep 11, 2006, at 5:31 AM, Steven Adeff wrote:
> > 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.
>
> My PATA device is also set to 0. Unfortunately it is causing major
> issues for me. I feel like I made a big mistake in buying AMD64. I've
> thrown about $3500 into this box in hopes that I would be ahead of
> the game and not experience the issues of lower-end hardware. Seems
> like there's no winning.

It has nothing to do with AMD64. I've got 3 AMD64 systems all running
MythTV without problems.

-- 
Steve
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