Date: Tue, 5 Jun 2007 10:00:20 -0700 From: Chuck Swiger <cswiger@mac.com> To: N. Harrington <drumslayer2@yahoo.com> Cc: questions@freebsd.org Subject: Re: How to solve mysterious system lockups? Message-ID: <8229DFF3-1298-4692-A6CC-886EC2E97730@mac.com> In-Reply-To: <798114.3933.qm@web34504.mail.mud.yahoo.com> References: <798114.3933.qm@web34504.mail.mud.yahoo.com>
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On Jun 4, 2007, at 8:49 PM, N. Harrington wrote:
> Hi Garret
> Here is the driver info.
>
> -- SATA
>
> atapci0: <SiI 3114 SATA150 controller> port
> 0xbc00-0xbc07,0xb400-0xb403,0xb000-0xb007,0xac00-0xac03,0xa800-0xa80f
Ah-- regrettably, the Silicon Image 3112 & 3114 chips have some
significant hardware defects, which tend to show up more frequently
when you put the disk system under significant load (especially
RAID). It's likely to be the case that switching to a better SATA
controller would resolve the problems you are seeing with your SATA-
based machines.
If you have a chance, perhaps see whether building a kernel with the
following patch does anything to help the "disk lockups" you've seen:
--- sys/dev/ataata-chipset.c~ Wed Jun 1 14:24:26 2005
+++ sys/dev/ataata-chipset.c Tue Jun 5 12:54:58 2007
@@ -2240,7 +2240,7 @@
struct ata_pci_controller *ctlr = device_get_softc(dev);
struct ata_chip_id *idx;
static struct ata_chip_id ids[] =
- {{ ATA_SII3114, 0x00, SIIMEMIO, SII4CH, ATA_SA150, "SiI
3114" },
+ {{ ATA_SII3114, 0x00, SIIMEMIO, (SII4CH|SIIBUG), ATA_SA150,
"SiI 3114" },
{ ATA_SII3512, 0x02, SIIMEMIO, 0, ATA_SA150, "SiI
3512" },
{ ATA_SII3112, 0x02, SIIMEMIO, 0, ATA_SA150, "SiI
3112" },
{ ATA_SII3112_1, 0x02, SIIMEMIO, 0, ATA_SA150, "SiI
3112" },
The effect of this change is to limit the SilI controller into doing
DMA transfers which are smaller than 8KB, which seems to mitigate the
most significant problems with the chipset, at the cost of some
performance.
--
-Chuck
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