From: Arjan van de Ven <arjan@infradead.org>
To: John Richard Moser <nigelenki@comcast.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: PAE/NX without performance drain?
Date: Sun, 10 Dec 2006 10:37:57 +0100 [thread overview]
Message-ID: <1165743478.27217.187.camel@laptopd505.fenrus.org> (raw)
In-Reply-To: <457B1F02.7030409@comcast.net>
On Sat, 2006-12-09 at 15:39 -0500, John Richard Moser wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Apparently (as I've been told today) using a hardware NX bit in a 32-bit
> x86 kernel requires PAE mode. PAE mode is enabled with HIGHMEM64, which
> is (apparently) extremely slow.
it's not extremely slow.
there is a minor performance delta, sure, but to be honest that's a
benchmark thing more than a real life thing.
What did your measurements show that the slowdown was? And how did you
measure this?
next prev parent reply other threads:[~2006-12-10 9:38 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-09 20:39 John Richard Moser
2006-12-10 9:37 ` Arjan van de Ven [this message]
2006-12-10 15:34 ` John Richard Moser
2006-12-10 19:40 ` Arjan van de Ven
2006-12-10 20:56 ` John Richard Moser
2006-12-10 21:00 ` Arjan van de Ven
2006-12-10 21:05 ` John Richard Moser
2006-12-12 18:03 ` Dave Jones
2006-12-11 4:46 Chuck Ebbert
2006-12-11 4:58 ` John Richard Moser
2006-12-11 5:43 ` Randy Dunlap
2006-12-11 13:33 ` Matthew Garrett
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