From: Linus Torvalds <torvalds@transmeta.com>
To: Andrea Arcangeli <andrea@suse.de>
Cc: Ingo Molnar <mingo@chiara.csoma.elte.hu>,
Kanoj Sarcar <kanoj@google.engr.sgi.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Rik van Riel <riel@nl.linux.org>,
linux-mm@kvack.org, linux-kernel@vger.rutgers.edu
Subject: Re: [RFC] 2.3.39 zone balancing
Date: Thu, 13 Jan 2000 16:52:47 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.10.10001131650520.2250-100000@penguin.transmeta.com> (raw)
In-Reply-To: <Pine.LNX.4.21.0001140128510.3816-100000@alpha.random>
On Fri, 14 Jan 2000, Andrea Arcangeli wrote:
>
> The only problem in what you are suggesting is that you may end swapping
> out also the wrong pages. Suppose you want to allocate 4k of DMA
> memory.
I agree.
HOWEVER, I don't think this is going to be a huge issue in most cases. And
if people don't need non-DMA memory, then the pages we "swapped" out are
going to stay in RAM anyway, so it's not going to hurt us.
Anyway, I obviously do agree that I may well be wrong, and that real life
is going to come back and bite us, and we'll end up having to not do it
this way. However, I'd prefer trying the "conceptually simple" path first,
and only if it turns out that yes, I was completely wrong, do we try to
fix it up with magic heuristics etc.
Linus
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next prev parent reply other threads:[~2000-01-14 0:52 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-01-12 21:11 Kanoj Sarcar
2000-01-13 13:40 ` Rik van Riel
2000-01-13 17:06 ` Andrea Arcangeli
2000-01-13 17:18 ` Alan Cox
2000-01-13 18:37 ` Rik van Riel
2000-01-13 20:13 ` Andrea Arcangeli
2000-01-13 21:12 ` Rik van Riel
2000-01-13 21:40 ` Kanoj Sarcar
2000-01-14 12:25 ` Jamie Lokier
2000-01-14 13:43 ` Andrea Arcangeli
2000-01-13 18:52 ` Kanoj Sarcar
2000-01-13 19:59 ` Andrea Arcangeli
2000-01-13 21:02 ` Kanoj Sarcar
2000-01-13 21:34 ` Benjamin C.R. LaHaise
2000-01-13 21:48 ` Kanoj Sarcar
2000-01-13 21:42 ` Alan Cox
2000-01-13 21:50 ` Kanoj Sarcar
2000-01-13 21:53 ` Alan Cox
2000-01-13 22:01 ` Linus Torvalds
2000-01-13 22:13 ` Kanoj Sarcar
2000-01-13 22:28 ` Rik van Riel
2000-01-13 22:30 ` Linus Torvalds
2000-01-13 23:53 ` Ingo Molnar
2000-01-13 23:29 ` Linus Torvalds
2000-01-14 0:33 ` Andrea Arcangeli
2000-01-14 0:52 ` Linus Torvalds [this message]
2000-01-14 1:08 ` Rik van Riel
2000-01-14 2:13 ` Ingo Molnar
2000-01-14 1:17 ` Kanoj Sarcar
2000-01-14 2:36 ` Ingo Molnar
2000-01-14 20:33 ` Peter Rival
2000-01-14 1:13 ` Kanoj Sarcar
2000-01-14 2:27 ` Ingo Molnar
2000-01-14 2:46 ` Ingo Molnar
2000-01-14 6:22 ` Kanoj Sarcar
2000-01-15 2:03 ` Reworked 2.3.39 zone balancing - v1 Kanoj Sarcar
2000-01-14 0:28 ` [RFC] 2.3.39 zone balancing Andrea Arcangeli
2000-01-13 17:12 ` Andrea Arcangeli
2000-01-13 18:30 ` Kanoj Sarcar
2000-01-13 19:22 ` Andrea Arcangeli
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