On Tue, December 11, 2007 3:33 pm, Gus Wirth wrote:
> Lan Barnes wrote:
>> On Tue, December 11, 2007 12:31 pm, Gus Wirth wrote:
>>> Lan Barnes wrote:
>>>> I just did a stupid "Send" of a trimmed Gus message. My bad.
>>>>
>>>> On Sun, December 9, 2007 6:48 pm, Gus Wirth wrote:
>>>>
>>>>> If all three cards are trying to record at the same time you may be
>>>>> encountering PCI bus latency issues. See this article on the MythTV
>>>>> Wiki
>>>>> for more info: http://www.mythtv.org/wiki/index.php/PCI_Latency
>>>>>
>>>> That looks terrifically promising. I checked and all three cards were
>>>> at
>>>> latency 64. I bumped all three to 128, and added that to
>>>> /etc/rc.local.
>>>> We
>>>> shall see if this problem goes away.
>>> What is the latency setting for the hard drive? It should be set higher
>>> than the cards. The article recommends setting the hard drive to have a
>>> latency of 0xb0 (176 dec). Also, the wiki links to an excellent article
>>> on the IBM Developer Works site
>>> <http://www-128.ibm.com/developerworks/library/l-hw2.html> which I
>>> highly recommend reading. That article gives more rational for the
>>> settings and gives good advice on IRQs (Interrupt Requests).
>>>
>>> Gus
>>>
>>>
>>
>> It had two drive controllers (remember, I got the machine used, so I'm
>> groping my way here).
>>
>> The first doesn't appear to be used, and I left it alone.
>>
>> 00:1f.1 IDE interface: Intel Corporation 82801DB (ICH4) IDE Controller
>> (rev 02) (prog-if 8a [Master SecP PriP])
>> Subsystem: ASUSTeK Computer Inc. Unknown device 8089
>> Flags: bus master, medium devsel, latency 0, IRQ 16
>> I/O ports at 01f0 [size=8]
>> I/O ports at 03f4 [size=1]
>> I/O ports at 0170 [size=8]
>> I/O ports at 0374 [size=1]
>> I/O ports at f000 [size=16]
>> Memory at 50000000 (32-bit, non-prefetchable) [size=1K]
>>
>> The second was set at 64, and I bumped it up to 0xb0.
>>
>> 02:04.0 RAID bus controller: Silicon Image, Inc. SiI 3112
>> [SATALink/SATARaid] Serial ATA Controller (rev 02)
>> Subsystem: Silicon Image, Inc. SiI 3112 SATARaid Controller
>> Flags: bus master, 66MHz, medium devsel, latency 176, IRQ 20
>> I/O ports at b800 [size=8]
>> I/O ports at b400 [size=4]
>> I/O ports at b000 [size=8]
>> I/O ports at a800 [size=4]
>> I/O ports at a400 [size=16]
>> Memory at d9000000 (32-bit, non-prefetchable) [size=512]
>> Expansion ROM at e3f80000 [disabled] [size=512K]
>> Capabilities: [60] Power Management version 2
>>
>>
>> Reply only if I messed up ... otherwise, let me watch this for a couple
>> of
>> days and then report whether it turns out to be the secret sauce.
>
> Is your hard drive SATA? I thought you had a Parallel ATA (IDE) drive.
> It wouldn't hurt to bump both controllers up. dmesg should show which
> controller has which drive.
>
> Gus
>
[EMAIL PROTECTED] ~]# dmesg|grep "[h|s]d[a-z]"
ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:pio, hdd:pio
hda: TDK DVDRW0404N, ATAPI CD/DVD-ROM drive
hda: hw_config=0000
hda: hw_config=0000
SCSI device sda: 320173056 512-byte hdwr sectors (163929 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
SCSI device sda: 320173056 512-byte hdwr sectors (163929 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sda: sda1 sda2
sd 0:0:0:0: Attached scsi disk sda
SCSI device sdb: 490234752 512-byte hdwr sectors (251000 MB)
sdb: Write Protect is off
sdb: Mode Sense: 00 3a 00 00
SCSI device sdb: write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
SCSI device sdb: 490234752 512-byte hdwr sectors (251000 MB)
sdb: Write Protect is off
sdb: Mode Sense: 00 3a 00 00
SCSI device sdb: write cache: enabled, read cache: enabled, doesn't
support DPO or FUA
sdb: sdb1
sd 1:0:0:0: Attached scsi disk sdb
hda: ATAPI 40X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache, UDMA(33)
EXT3 FS on sda1, internal journal
So it looks like MythDora, at least, sees the data drives as scsi.
But, what do I know?
I know that trying to turn on DMA with hdparam gets rejected as
inappropriate, because I tried :-)
--
Lan Barnes
SCM Analyst Linux Guy
Tcl/Tk Enthusiast Biodiesel Brewer
--
[email protected]
http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
