From: Andi Kleen <andi@firstfloor.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Alexander van Heukelum <heukelum@fastmail.fm>,
Andi Kleen <andi@firstfloor.org>,
Cyrill Gorcunov <gorcunov@gmail.com>,
Alexander van Heukelum <heukelum@mailshack.com>,
LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
Thomas Gleixner <tglx@linutronix.de>,
lguest@ozlabs.org, jeremy@xensource.com,
Steven Rostedt <srostedt@redhat.com>,
Mike Travis <travis@sgi.com>
Subject: Re: [PATCH RFC/RFB] x86_64, i386: interrupt dispatch changes
Date: Tue, 4 Nov 2008 21:30:46 +0100 [thread overview]
Message-ID: <20081104203046.GF29626@one.firstfloor.org> (raw)
In-Reply-To: <4910A390.409@zytor.com>
> Fixing the first of these I think is a no-brainer. That will cut the
> size of the existing stub pool by almost half. The second is more of a
> judgement call, and I'd like to see performance numbers for it. Either
> which way, I think it's worthwhile to consider this as an alternative to
> playing segmentation tricks, which I think could have really nasty
> side effects.
Or again just generate them on demand when the interrupt is set up.
If you really have 240 interrupts sources you can afford the 5k likely,
but for most there will be only a minimum number of stubs.
Although frankly I suspect there are far easier ways to save 5k of memory.
-Andi
next prev parent reply other threads:[~2008-11-04 20:22 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-04 12:28 [PATCH RFC/RFB] x86_64, i386: interrupt dispatch changes Alexander van Heukelum
2008-11-04 12:42 ` Ingo Molnar
2008-11-04 13:29 ` Alexander van Heukelum
2008-11-04 14:00 ` Ingo Molnar
2008-11-04 16:23 ` Alexander van Heukelum
2008-11-04 16:47 ` Cyrill Gorcunov
2008-11-04 16:58 ` Ingo Molnar
2008-11-04 17:13 ` Cyrill Gorcunov
2008-11-04 17:29 ` Alexander van Heukelum
2008-11-06 9:19 ` Ingo Molnar
2008-11-04 20:02 ` Jeremy Fitzhardinge
2008-11-04 20:15 ` H. Peter Anvin
2008-11-04 20:02 ` Jeremy Fitzhardinge
2008-11-04 15:07 ` Cyrill Gorcunov
2008-11-04 15:47 ` Alexander van Heukelum
2008-11-04 16:36 ` Ingo Molnar
2008-11-04 16:45 ` Alexander van Heukelum
2008-11-04 16:54 ` Ingo Molnar
2008-11-04 16:55 ` Ingo Molnar
2008-11-04 16:58 ` Alexander van Heukelum
2008-11-04 17:39 ` Alexander van Heukelum
2008-11-04 17:05 ` Andi Kleen
2008-11-04 18:06 ` Alexander van Heukelum
2008-11-04 18:14 ` H. Peter Anvin
2008-11-04 18:44 ` Alexander van Heukelum
2008-11-04 19:07 ` H. Peter Anvin
2008-11-04 19:33 ` H. Peter Anvin
2008-11-04 20:06 ` Jeremy Fitzhardinge
2008-11-04 20:30 ` Andi Kleen [this message]
2008-11-04 20:26 ` H. Peter Anvin
2008-11-04 20:46 ` Andi Kleen
2008-11-04 20:44 ` Ingo Molnar
2008-11-04 21:06 ` Andi Kleen
2008-11-05 0:42 ` Jeremy Fitzhardinge
2008-11-05 0:50 ` H. Peter Anvin
2008-11-06 9:15 ` Ingo Molnar
2008-11-06 9:25 ` H. Peter Anvin
2008-11-06 9:30 ` Ingo Molnar
2008-11-05 10:26 ` Ingo Molnar
2008-11-14 1:11 ` Nick Piggin
2008-11-14 1:20 ` H. Peter Anvin
2008-11-14 2:12 ` Nick Piggin
2008-11-04 21:29 ` Ingo Molnar
2008-11-04 21:35 ` H. Peter Anvin
2008-11-04 21:52 ` Ingo Molnar
2008-11-05 17:53 ` Cyrill Gorcunov
2008-11-05 18:04 ` H. Peter Anvin
2008-11-05 18:14 ` Cyrill Gorcunov
2008-11-05 18:20 ` H. Peter Anvin
2008-11-05 18:26 ` Cyrill Gorcunov
[not found] ` <1226243805.27361.1283784629@webmail.messagingengine.com>
2008-11-10 1:29 ` H. Peter Anvin
2008-11-26 21:35 ` [Lguest] " Avi Kivity
2008-11-26 21:50 ` Avi Kivity
2008-11-27 0:03 ` H. Peter Anvin
2008-11-27 10:13 ` Avi Kivity
2008-11-27 10:56 ` Andi Kleen
2008-11-27 10:59 ` Avi Kivity
2008-11-28 20:48 ` Alexander van Heukelum
2008-11-29 15:45 ` Alexander van Heukelum
2008-11-29 18:21 ` Avi Kivity
2008-11-29 18:22 ` Avi Kivity
2008-11-29 19:58 ` Ingo Molnar
2008-12-01 4:32 ` Rusty Russell
2008-12-01 8:00 ` Ingo Molnar
2008-12-01 9:24 ` Avi Kivity
2008-12-01 10:32 ` Cyrill Gorcunov
2008-12-01 10:41 ` Avi Kivity
2008-12-01 10:49 ` Ingo Molnar
2008-11-10 8:58 ` Ingo Molnar
2008-11-10 12:44 ` Alexander van Heukelum
2008-11-10 13:07 ` Ingo Molnar
2008-11-10 21:35 ` Alexander van Heukelum
2008-11-10 22:21 ` H. Peter Anvin
2008-11-11 5:00 ` H. Peter Anvin
2008-11-13 22:23 ` Matt Mackall
2008-11-14 1:18 ` H. Peter Anvin
2008-11-14 2:29 ` Matt Mackall
2008-11-14 3:22 ` H. Peter Anvin
2008-11-11 9:54 ` Ingo Molnar
2008-11-10 15:39 ` H. Peter Anvin
2008-11-10 21:44 ` Alexander van Heukelum
2008-11-10 23:34 ` H. Peter Anvin
2008-11-05 18:15 ` Cyrill Gorcunov
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