Re: kern/45034: Satalink driver downgrades from DMA to PIO 4 from soft errors (sandpoint/PowerPc)

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Thu, Jun 09, 2011 at 03:00:01PM +0000, oscarmolin%gmail.com@localhost wrote:
> When performing large file transfers (tested over NFS) onto harddrives 
> attached to silicon image 3512 controller, soft errors occur and causes the 
> satalink driver to downgrade from DMA to PIO 4 mode, causing big performance 
> penalty.
> 
> This has been tested with all for available SATA channels (my system has  
> 2x2-port controllers) and with different harddrives and SATA cables.
> 
> After rebooting, the harddrives function at full speed again but when large 
> transfers are started, soft errors occur after a short while.

please give more details about the error (the kernel messages for
example)

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--