From: Benjamin LaHaise <bcrl@redhat.com>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: "David S. Miller" <davem@redhat.com>, linux-kernel@vger.kernel.org
Subject: Re: please revert bogus patch to vmscan.c
Date: Mon, 29 Oct 2001 18:29:49 -0500 [thread overview]
Message-ID: <20011029182949.H25434@redhat.com> (raw)
In-Reply-To: <20011029.151422.102554141.davem@redhat.com> <Pine.LNX.4.33.0110291520260.16656-100000@penguin.transmeta.com>
In-Reply-To: <Pine.LNX.4.33.0110291520260.16656-100000@penguin.transmeta.com>; from torvalds@transmeta.com on Mon, Oct 29, 2001 at 03:22:28PM -0800
On Mon, Oct 29, 2001 at 03:22:28PM -0800, Linus Torvalds wrote:
> Does it make the accessed bit less reliable? Sure it does. But basically,
> either the page is accessed SO much that it stays in the TLB all the time
> (which is basically not really possible if you page heavily, I suspect),
> or it will age out of the TLB on its own at which point we get the
> accessed bit back.
Think of CPUs with tagged tlbs and lots of entries. Or even a system that
only runs 1 threaded app. Easily triggerable. If people want to optimise
it, great. But go for correctness first, please...
-ben
next prev parent reply other threads:[~2001-10-29 23:29 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-29 23:08 please revert bogus patch to vmscan.c Benjamin LaHaise
2001-10-29 23:14 ` David S. Miller
2001-10-29 23:15 ` Benjamin LaHaise
2001-10-29 23:25 ` Linus Torvalds
2001-10-29 23:33 ` Benjamin LaHaise
2001-10-29 23:36 ` David S. Miller
2001-10-29 23:39 ` Benjamin LaHaise
2001-10-29 23:41 ` Linus Torvalds
2001-10-29 23:48 ` Benjamin LaHaise
2001-10-29 23:50 ` David S. Miller
2001-10-29 23:51 ` Benjamin LaHaise
2001-10-29 23:55 ` David S. Miller
2001-10-29 23:57 ` Benjamin LaHaise
2001-10-30 0:01 ` David S. Miller
2001-10-30 0:05 ` Benjamin LaHaise
2001-10-29 23:58 ` Linus Torvalds
2001-10-30 1:31 ` Rik van Riel
2001-10-30 1:34 ` David S. Miller
2001-10-30 1:42 ` Linus Torvalds
2001-10-30 1:46 ` David S. Miller
2001-10-30 2:25 ` Benjamin LaHaise
2001-10-30 15:20 ` Andrea Arcangeli
2001-10-30 15:34 ` Rik van Riel
2001-10-30 15:51 ` Andrea Arcangeli
2001-10-30 16:34 ` Benjamin LaHaise
2001-10-30 17:00 ` Andrea Arcangeli
2001-10-30 17:07 ` Rik van Riel
2001-10-30 16:13 ` Giuliano Pochini
2001-10-30 16:54 ` Andrea Arcangeli
2001-10-30 17:23 ` Giuliano Pochini
2001-10-30 17:30 ` Andrea Arcangeli
2001-10-31 0:38 ` Paul Mackerras
[not found] ` <15327.8495.767553.389519@cargo.ozlabs.ibm.com>
2001-10-31 1:57 ` Andrea Arcangeli
2001-10-30 16:38 ` Linus Torvalds
2001-10-30 16:47 ` Benjamin LaHaise
2001-10-30 16:57 ` Victor Yodaiken
2001-10-30 17:16 ` Troy Benjegerdes
2001-10-30 17:17 ` Linus Torvalds
2001-10-30 17:51 ` Victor Yodaiken
2001-10-30 18:01 ` Cort Dougan
2001-10-30 21:39 ` Paul Mackerras
2001-10-30 22:36 ` Victor Yodaiken
2001-10-30 17:23 ` Benjamin Herrenschmidt
2001-10-30 17:36 ` Benjamin Herrenschmidt
2001-10-30 17:41 ` Linus Torvalds
2001-10-30 1:49 ` Benjamin LaHaise
2001-10-30 9:03 ` Alan Cox
2001-10-29 23:22 ` Linus Torvalds
2001-10-29 23:29 ` Benjamin LaHaise [this message]
2001-10-29 23:44 ` Linus Torvalds
2001-10-30 0:02 ` Hugh Dickins
2001-10-30 0:04 ` Linus Torvalds
2001-10-30 0:04 ` David S. Miller
2001-10-29 23:51 ` Paul Mackerras
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