From: Ingo Molnar <mingo@elte.hu>
To: Rik van Riel <riel@conectiva.com.br>
Cc: Linus Torvalds <torvalds@transmeta.com>,
MM mailing list <linux-mm@kvack.org>,
linux-kernel@vger.rutgers.edu
Subject: Re: pre8: where has the anti-hog code gone?
Date: Sun, 14 May 2000 14:12:53 +0200 (CEST) [thread overview]
Message-ID: <Pine.LNX.4.10.10005141410190.2201-100000@elte.hu> (raw)
In-Reply-To: <Pine.LNX.4.21.0005140855260.16064-100000@duckman.distro.conectiva>
On Sun, 14 May 2000, Rik van Riel wrote:
> Mark the zone as a "steal-before-allocate" zone while
> one user process is in the page stealer because it
> could not find an easy page.
this i believe is fundamentally single-threaded (and now with the latest
Linus VM we have massively parallel allocation points). The problem is not
to notice low memory situations (we already have the low_on_memory flag),
the problem is to un-anonymize resulting free pages. Anonym freeing ==
unfairness, which unfairness ultimately leads to NULL gfp and bad
allocation latency.
Ingo
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next prev parent reply other threads:[~2000-05-14 12:12 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-05-12 23:37 Rik van Riel
2000-05-13 15:28 ` Linus Torvalds
2000-05-13 18:14 ` Juan J. Quintela
2000-05-13 21:24 ` Arjan van de Ven
2000-05-13 21:59 ` Juan J. Quintela
2000-05-14 3:41 ` Linus Torvalds
2000-05-14 8:45 ` Arjan van de Ven
2000-05-15 1:37 ` Linus Torvalds
2000-05-14 10:52 ` Ingo Molnar
2000-05-14 10:55 ` Ingo Molnar
2000-05-14 11:28 ` Ingo Molnar
2000-05-14 12:01 ` Rik van Riel
2000-05-14 12:12 ` Ingo Molnar [this message]
2000-05-14 12:19 ` Ingo Molnar
2000-05-15 14:50 Mark_H_Johnson.RTS
2000-05-15 15:58 ` Rik van Riel
2000-05-15 16:01 ` Linus Torvalds
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