Lan Barnes wrote: > 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: Joshua already answered this question two days ago. Gus -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
