From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 7 Jun 2000 19:29:16 -0300 (BRST) From: Rik van Riel Subject: Re: journaling & VM In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: James Sutherland Cc: Hans Reiser , "Stephen C. Tweedie" , "Quintela Carreira Juan J." , linux-kernel@vger.rutgers.edu, Chris Mason , linux-mm@kvack.org, Alexander Zarochentcev List-ID: On Wed, 7 Jun 2000, James Sutherland wrote: > On Wed, 7 Jun 2000, Hans Reiser wrote: > > > Let me convey an aspect of its rightness. > > > > Caches have a declining marginal utility. > > Incidentally, this effect comes up in Andrew Schulman's book, > Unauthorized Windows '95, in the section where he compares raw > DOS, SmartDrive, Windows 3.1 with 32 bit disk access, [SNIP] The difference here is that those systems do NOT have a unified VM. Also, mmap() isn't used for program data and lots of other stuff we're doing isn't done on those systems. In a world where you mmap() your executables and major parts of your program data, properly managing all the caches *is* important... regards, Rik -- The Internet is not a network of computers. It is a network of people. That is its real strength. Wanna talk about the kernel? irc.openprojects.net / #kernelnewbies http://www.conectiva.com/ http://www.surriel.com/ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/