Date: Wed, 21 Mar 2001 13:31:45 -0300 (BRST) From: Rik van Riel <riel@conectiva.com.br> To: Peter Wemm <peter@netplex.com.au> Cc: Matt Dillon <dillon@earth.backplane.com>, Alfred Perlstein <bright@wintelcom.net>, "Michael C . Wu" <keichii@peorth.iteration.net>, "Michael C . Wu" <keichii@iteration.net>, izero@ms26.hinet.net, cross@math.psu.edu, grog@FreeBSD.ORG, fs@FreeBSD.ORG, hackers@FreeBSD.ORG Subject: Re: tuning a VERY heavily (30.0) loaded s cerver Message-ID: <Pine.LNX.4.21.0103211328310.9056-100000@imladris.rielhome.conectiva> In-Reply-To: <200103211114.f2LBE0h57371@mobile.wemm.org>
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On Wed, 21 Mar 2001, Peter Wemm wrote: > Also, 4MB = 1024 pages, at 28 bytes per mapping == 28k per process. 28 bytes/mapping is a LOT. I've implemented an (admittedly not completely architecture-independent) reverse mapping patch for Linux with an overhead of 8 bytes/pte... I wonder how hard/easy would it be to reduce the memory overhead of some of these old Mach data structures in FreeBSD... regards, Rik -- 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.br/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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