From: Pavel Machek <pavel@suse.cz>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>, "H. Peter Anvin" <hpa@zytor.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] fs/devfs/base.c
Date: Tue, 5 Jun 2001 23:38:16 +0200 [thread overview]
Message-ID: <20010605233816.A512@bug.ucw.cz> (raw)
In-Reply-To: <9fht4j$cce$1@cesium.transmeta.com> <E157AlZ-0006Vi-00@the-village.bc.nu>
In-Reply-To: <E157AlZ-0006Vi-00@the-village.bc.nu>; from Alan Cox on Tue, Jun 05, 2001 at 07:56:37AM +0100
Hi!
> > It's trivial to calculate for DAGs -- directed acyclic graphs. It's
> > when the "acyclic" constraint is violated that you have problems!
>
> It may well be that interrupt stacks are a win anyway. If we can get the kernel
> struct out of the stack pages (which would fix some very unpleasant cache
> colour problems) and take the non irq stack down to 4K then irq stacks would
> pay off once you had 25 or so processes on a system
For what it is worth, we are using interrupt stack on x86-64. And it
was not *that* painfull.
Pavel
--
I'm pavel@ucw.cz. "In my country we have almost anarchy and I don't care."
Panos Katsaloulis describing me w.r.t. patents at discuss@linmodems.org
next prev parent reply other threads:[~2001-06-06 9:23 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-05-27 10:12 [PATCH] fs/devfs/base.c Akash Jain
2001-05-27 13:21 ` Richard Gooch
2001-05-28 14:43 ` Maximum size of automatic allocation? (was: [PATCH] fs/devfs/base.c) Daniel Phillips
2001-06-03 23:55 ` [PATCH] fs/devfs/base.c Linus Torvalds
2001-06-04 0:03 ` Richard Gooch
2001-06-04 6:44 ` Alan Cox
2001-06-04 7:07 ` Richard Gooch
2001-06-04 19:26 ` Bill Pringlemeir
2001-06-04 19:39 ` Kernel Stack usage [was: [PATCH] fs/devfs/base.c] Bill Pringlemeir
2001-06-05 6:10 ` [PATCH] fs/devfs/base.c H. Peter Anvin
2001-06-05 6:56 ` Alan Cox
2001-06-05 11:37 ` Andrew Morton
2001-06-05 21:38 ` Pavel Machek [this message]
2001-06-04 10:09 ` Linus Torvalds
2001-06-05 1:41 ` Dawson R Engler
2001-06-05 8:49 ` Ingo Molnar
2001-06-04 20:15 ` Daniel Phillips
2001-06-05 4:24 ` Paul Mackerras
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