From: Andi Kleen <ak@suse.de>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
Greg Kroah-Hartman <gregkh@suse.de>,
Jay Cliburn <jacliburn@bellsouth.net>,
Grzegorz Krzystek <ninex@ninex.eu.org>,
ninex@o2.pl, linux-kernel@vger.kernel.org,
linux-pci@atrey.karlin.mff.cuni.cz,
Michael Ellerman <michael@ellerman.id.au>,
David Miller <davem@davemloft.net>,
Tony Luck <tony.luck@intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH 1/2] msi: Invert the sense of the MSI enables.
Date: Fri, 25 May 2007 07:51:45 +0200 [thread overview]
Message-ID: <200705250751.45738.ak@suse.de> (raw)
In-Reply-To: <20070524213157.1d39458f.akpm@linux-foundation.org>
> Do we have a feel for how much performace we're losing on those
> systems which _could_ do MSI, but which will end up defaulting
> to not using it?
At least on 10GB ethernet it is a significant difference; you usually
cannot go anywhere near line speed without MSI
I suspect it is visible on high performance / multiple GB NICs too.
-Andi
next prev parent reply other threads:[~2007-05-25 5:51 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
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2007-05-25 4:19 ` [PATCH 1/2] msi: Invert the sense of the MSI enables Eric W. Biederman
2007-05-25 4:26 ` [PATCH 2/2] msi: Add support for the Intel chipsets that support MSI Eric W. Biederman
2007-05-25 5:38 ` Andi Kleen
2007-05-25 6:10 ` Eric W. Biederman
2007-05-25 14:42 ` Chuck Ebbert
2007-05-25 16:52 ` Eric W. Biederman
2007-05-25 4:31 ` [PATCH 1/2] msi: Invert the sense of the MSI enables Andrew Morton
2007-05-25 5:20 ` Eric W. Biederman
2007-05-25 5:44 ` Grant Grundler
2007-05-25 5:51 ` Andi Kleen [this message]
2007-05-25 20:16 ` Jonathan Lundell
2007-05-26 6:52 ` Grant Grundler
2007-05-25 5:14 ` Michael Ellerman
2007-05-25 5:59 ` Eric W. Biederman
2007-05-25 6:40 ` David Miller
2007-05-25 5:20 ` Greg KH
2007-05-25 5:57 ` Eric W. Biederman
2007-05-25 15:17 ` Eric W. Biederman
2007-05-25 15:28 ` Chuck Ebbert
2007-05-25 15:40 ` Roland Dreier
2007-05-25 15:42 ` Roland Dreier
2007-05-25 16:10 ` Eric W. Biederman
2007-05-25 20:09 ` David Schwartz
2007-05-25 20:25 ` Roland Dreier
2007-05-25 20:35 ` Greg KH
2007-05-25 21:06 ` Eric W. Biederman
2007-05-25 21:17 ` Roland Dreier
2007-05-25 21:31 ` Greg KH
2007-05-26 6:43 ` Grant Grundler
2007-05-25 21:47 ` Brice Goglin
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