[mythtv-users] SATA and DMA (SIIG 3112)
pc-mythtv06a at crowcastle.net
Fri Mar 31 22:13:57 UTC 2006
On Fri, 2006-03-31 at 17:10 -0500, Calvin Harrigan wrote:
> Preston Crow wrote:
> >On Fri, 2006-03-31 at 15:26 -0600, leland sindt wrote:
> >> Two SD and one HD stream is a *lot* of data, you may be hitting the real limit of the drive system.
> >>Yes, it is a lot of data... My orig plan was to use a SATA II controller
> >>(but didn't know at the it required pci-e at the time)
> >>Hmmm... Anybody got numbers/experience with Hardware/Software Raid 0? Did it result in increased bandwidth?
> >>(Less likely with software, I know)
> >I don't think that's the problem. I think it's the 3112 controller.
> ># lspci | grep SATA
> >01:0b.0 RAID bus controller: Silicon Image, Inc. SiI 3112 [SATALink/SATARaid] Serial ATA Controller (rev 02)
> >The 3112 controller is problematic, at least under Linux. I'm not sure
> >what the technical details are; it's either doing something to the PCI
> >bus or issuing too many interrupts. Anyway, I found that while hdparm
> >reported double the performance on my SATA drive compared to my PATA
> >drive, HDTV recordings on my SATA drive were full of errors, but
> >recordings on my PATA drive were perfect.
> >This is true of every kernel I've tried, including the new 2.6.16.
> >I now record only to the PATA drive. (And I'm looking for a PCI SATA
> >controller with something other than the 3112 chip for a good price, as
> >I don't want to upgrade my motherboard for a while.)
> I have that controller running under 184.108.40.206 (Gentoo) Not a single
> issue here. Could it be implementation specific?
Certainly it could. Mine is integrated on my motherboard, an Asus
A7N8X-E Deluxe, I think.
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