From: "David S. Miller" <davem@redhat.com>
To: groudier@free.fr
Cc: gibbs@scsiguy.com, axboe@suse.de, skraw@ithnet.com,
phillips@bonn-fries.net, linux-kernel@vger.kernel.org
Subject: Re: With Daniel Phillips Patch
Date: Wed, 22 Aug 2001 14:14:48 -0700 (PDT) [thread overview]
Message-ID: <20010822.141448.112623586.davem@redhat.com> (raw)
In-Reply-To: <20010822223658.X932-100000@gerard>
In-Reply-To: <20010822.114620.77339267.davem@redhat.com> <20010822223658.X932-100000@gerard>
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From: Gérard Roudier <groudier@free.fr>
Date: Wed, 22 Aug 2001 23:07:47 +0200 (CEST)
And I seem to understand that David's preferred SUN hardware only
allows streaming when using SAC with IOMMU.:-)
It is true.
And using DAC is 1 PCI cycle lost per transaction and if we are
picky on performances ...
True. This is why I find it mysterious when I run across a device
which does not issue SAC for addresses with only 32-bits of
significance.
Happily, most do behave this way.
Later,
David S. Miller
davem@redhat.com
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next prev parent reply other threads:[~2001-08-22 21:15 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-20 8:36 aic7xxx errors with 2.4.8-ac7 on 440gx mobo Yusuf Goolamabbas
2001-08-20 8:55 ` Cliff Albert
2001-08-20 10:37 ` Alan Cox
2001-08-20 10:56 ` Yusuf Goolamabbas
2001-08-20 10:56 ` Alan Cox
2001-08-20 11:13 ` Yusuf Goolamabbas
2001-08-20 11:09 ` Alan Cox
2001-08-20 16:43 ` Doug Ledford
2001-08-20 12:46 ` Stefan Fleiter
2001-08-20 15:19 ` Ville Herva
2001-08-20 20:33 ` Justin T. Gibbs
2001-08-20 16:45 ` Doug Ledford
2001-08-20 17:23 ` Stefan Fleiter
2001-08-20 20:28 ` Justin T. Gibbs
2001-08-21 20:24 ` Stefan Fleiter
2001-08-20 16:21 ` Cliff Albert
2001-08-20 17:23 ` Peter T. Breuer
2001-08-20 17:28 ` Cliff Albert
2001-08-20 20:27 ` Justin T. Gibbs
2001-08-20 20:45 ` Cliff Albert
2001-08-20 21:04 ` Cliff Albert
2001-08-20 21:09 ` Cliff Albert
2001-08-20 21:45 ` Justin T. Gibbs
2001-08-20 22:36 ` aic7xxx with 2.4.9 on 7899P Sven Heinicke
2001-08-21 14:42 ` With Daniel Phillips Patch (was: aic7xxx with 2.4.9 on 7899P) Sven Heinicke
2001-08-21 15:08 ` Daniel Phillips
2001-08-21 16:48 ` Sven Heinicke
2001-08-21 17:18 ` Justin T. Gibbs
2001-08-21 22:49 ` Sven Heinicke
2001-08-22 13:06 ` Gérard Roudier
2001-08-21 17:26 ` Daniel Phillips
2001-08-21 17:55 ` Stephan von Krawczynski
2001-08-21 18:33 ` Justin T. Gibbs
2001-08-22 6:46 ` Jens Axboe
2001-08-22 13:24 ` Justin T. Gibbs
2001-08-22 15:05 ` With Daniel Phillips Patch David S. Miller
2001-08-22 18:21 ` Gérard Roudier
2001-08-22 18:32 ` David S. Miller
2001-08-22 18:32 ` Justin T. Gibbs
2001-08-22 18:46 ` David S. Miller
2001-08-22 19:41 ` Justin T. Gibbs
2001-08-22 20:19 ` David S. Miller
2001-08-22 21:07 ` Gérard Roudier
2001-08-22 21:14 ` David S. Miller
2001-08-22 21:14 ` David S. Miller [this message]
2001-08-22 21:40 ` Justin T. Gibbs
2001-08-22 23:09 ` David S. Miller
2001-08-23 0:01 ` Justin T. Gibbs
2001-08-23 0:40 ` David S. Miller
2001-08-23 0:55 ` Justin T. Gibbs
2001-08-23 1:03 ` Matthew Jacob
2001-08-23 1:08 ` David S. Miller
2001-08-23 1:32 ` Justin T. Gibbs
2001-08-23 1:39 ` David S. Miller
2001-08-23 1:49 ` Justin T. Gibbs
2001-08-21 22:44 ` With Daniel Phillips Patch (was: aic7xxx with 2.4.9 on 7899P) Sven Heinicke
2001-08-22 0:58 ` Daniel Phillips
2001-08-22 10:25 ` Marcelo Tosatti
2001-08-22 16:09 ` Sven Heinicke
2001-08-22 15:42 ` Marcelo Tosatti
2001-08-22 20:25 ` Sven Heinicke
2001-08-29 7:30 ` Andrey Nekrasov
2001-09-03 14:58 ` Marcelo Tosatti
2001-08-20 22:55 ` aic7xxx errors with 2.4.8-ac7 on 440gx mobo Cliff Albert
2001-08-21 0:36 ` Justin T. Gibbs
2001-08-21 15:34 ` Gérard Roudier
2001-08-20 21:44 ` Justin T. Gibbs
2001-08-20 21:48 ` Cliff Albert
2001-08-25 7:15 ` Cliff Albert
-- strict thread matches above, loose matches on Subject: below --
2001-08-23 1:06 With Daniel Phillips Patch Van Maren, Kevin
2001-08-23 1:31 ` David S. Miller
2001-08-23 1:40 ` Justin T. Gibbs
2001-08-23 1:45 ` David S. Miller
2001-08-23 2:22 Van Maren, Kevin
2001-08-23 2:26 ` David S. Miller
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