Date: Thu, 04 Apr 2002 16:52:14 -0500 From: "Jud " <jud@operamail.com> To: <culverk@alpha.yumyumyum.org>, <george@galis.org> Cc: <Kevin_Stevens@pursued-with.net>, <nl3481@wi.rr.com>, <questions@FreeBSD.ORG> Subject: Re: EIDE drive performance improvements Message-ID: <20020404215214.32543.qmail@operamail.com>
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----- Original Message -----
From: Kenneth Culver <culverk@alpha.yumyumyum.org>
Date: Thu, 4 Apr 2002 13:04:00 -0500 (EST)
To: George Georgalis <george@galis.org>
Subject: Re: EIDE drive performance improvements
> > Well it 'seems' faster with the tags option, never heard of that, but
> > we'll see if it croaks!
>
> The tags option enables tagged queueing on some IBM drives. I'm not sure
> but I think that allows multiple ata commands to be sent to the drive at
> once or something. I could be wrong so someone correct me if I am
>
> Ken
I had been using the tags option, but stopped because:
(1) My FreeBSD installation is now on a RAID array, and it
seems that although each of the 2 identical IBM ATA-100
drives in the array is "tag-capable," the array is not; and
(2) Leaving hw.ata.tags="1" in /boot/loader.conf appeared
to cause some momentary problem messages on bootup once or
twice - never enough to stop the boot altogether, but
enough to cause it to pause for a moment or two.
Jud
--
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