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

[Brad DerManouelian]

On Sep 11, 2006, at 1:14 PM, Steven Adeff wrote:

> On 9/11/06, Brad DerManouelian <myth at dermanouelian.com> wrote:
>> On Sep 11, 2006, at 7:32 AM, Steven Adeff wrote:
>>> 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.
>>
>> I'm saying it's a problem with my $200 motherboard which is AMD64. If
>> I had gone intel I probably wouldn't have the issue with this
>> motherboard. I also cannot get LCDproc to compile. Their website says
>> it won't work and I'm out of luck. I'm sure you can understand my
>> frustration with putting the money and effort into the "best I can
>> afford" and coming up with stuff that simply doesn't work.
>
> I've yet to pay more than $100 for an AMD64 motherboard and they have
> all worked fine. The concept of "best I can afford" is a concept that
> doesn't hold water. It's like buying a 2001 Mercedes and then when you
> start to have electrical problems exclaim "but I purchased the best
> that I could afford!" while your neighbor's 2001 Lexus runs fine.
>
> Let's hope moving the slot the card is in fixes the problem.

I didn't realize I had to justify why I bought this particular  
motherboard. This motherboard now sells for just over $100 if that  
makes you happier.