Date: Sat, 12 May 2001 18:17:15 -0300 (BRST) From: Rik van Riel <riel@conectiva.com.br> To: Matt Dillon <dillon@earth.backplane.com> Cc: <arch@freebsd.org>, <linux-mm@kvack.org>, <sfkaplan@cs.amherst.edu> Subject: Re: on load control / process swapping Message-ID: <Pine.LNX.4.33.0105121816190.18102-100000@duckman.distro.conectiva> In-Reply-To: <200105121721.f4CHLSS18553@earth.backplane.com>
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On Sat, 12 May 2001, Matt Dillon wrote: > :Ahhh, so FreeBSD _does_ have a maxscan equivalent, just one that > :only kicks in when the system is under very heavy memory pressure. > : > :That explains why FreeBSD's thrashing detection code works... ;) > > Note that there is a big distinction between limiting the page > queue scan rate (which we do not do), and sleeping between full > scans (which we do). Limiting the page queue scan rate on a > page-by-page basis does not scale. Sleeping in between full queue > scans (in an extreme case) does scale. I'm not convinced it's doing a very useful thing, though ;) (see the rest of the email you replied to) Rik -- Linux MM bugzilla: http://linux-mm.org/bugzilla.shtml Virtual memory is like a game you can't win; However, without VM there's truly nothing to lose... http://www.surriel.com/ http://www.conectiva.com/ http://distro.conectiva.com/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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