Date: Tue, 8 Apr 2003 16:16:35 +0200 From: Alexander Leidinger <Alexander@Leidinger.net> To: Soeren Schmidt <sos@spider.deepcore.dk> Cc: des@ofug.org Subject: Re: cvs commit: src/sys/dev/ata ata-all.c ata-all.h ata-chipset.cata-dma.c ata-pci.c ata-pci.h Message-ID: <20030408161635.12b7b0a5.Alexander@Leidinger.net> In-Reply-To: <200304081356.h38Du7PF032425@spider.deepcore.dk> References: <20030408153259.2a4b03ac.Alexander@Leidinger.net> <200304081356.h38Du7PF032425@spider.deepcore.dk>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, 8 Apr 2003 15:56:07 +0200 (CEST)
Soeren Schmidt <sos@spider.deepcore.dk> wrote:
> > > > > Besides, enabling ATA tags automatically enables the write cache.
> > > >
> > > > This can be changed...
> > >
> > > No it cannot, requirement of the HW.
> >
> > Does this mean we can't use ATA-TQ in situations where we would use TQ
> > without WC on a SCSI system (read: does it affect softupdates)?
>
> Well, this has newer been found out by hard evidence. The only vendor
> doing tags capable ATA disks doesn't want to tell, so we cant really
> know for sure. However tests here indicates that the "WC effect" is
> not in action when tags are enabled, but I could just have been
> unusually lucky...
You should gamble then... ;-)
Thanks,
Alexander.
--
It is easier to fix Unix than to live with NT.
http://www.Leidinger.net Alexander @ Leidinger.net
GPG fingerprint = C518 BC70 E67F 143F BE91 3365 79E2 9C60 B006 3FE7
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20030408161635.12b7b0a5.Alexander>