Date: Tue, 8 Apr 2003 22:43:25 +0200 From: Wilko Bulte <wkb@freebie.xs4all.nl> To: Poul-Henning Kamp <phk@phk.freebsd.dk>, Dag-Erling Smorgrav <des@ofug.org>, Nate Lawson <nate@root.org>, Alexander Leidinger <Alexander@Leidinger.net>, sos@spider.deepcore.dk, cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org, sos@FreeBSD.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: <20030408204325.GA10968@freebie.xs4all.nl> In-Reply-To: <20030408202308.GA49094@tara.freenix.org> References: <20030408172555.GA9572@freebie.xs4all.nl> <22238.1049823278@critter.freebsd.dk> <20030408202308.GA49094@tara.freenix.org>
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On Tue, Apr 08, 2003 at 10:23:08PM +0200, Ollivier Robert wrote: > According to Poul-Henning Kamp: > > Tagged queueing: > > Ability to reduce transaction latency by sending more than one > > request to the drive at a time. The request may be handled out > > of order by the drive. > > (A good thing!) > > Except for softupdates which rely on its own ordering of writes... SCSI has a Force Media Access bit somewhere that is supposed to ensure the written data has indeed hit the platter. ENOCLUE on ATA. -- | / o / /_ _ wilko@FreeBSD.org |/|/ / / /( (_) Bulte
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