From owner-freebsd-hackers Wed Feb 14 04:42:18 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id EAA21650 for hackers-outgoing; Wed, 14 Feb 1996 04:42:18 -0800 (PST) Received: from tepcogw.tepco.co.jp (tepcogw.tepco.co.jp [202.32.50.1]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id EAA21645 for ; Wed, 14 Feb 1996 04:42:15 -0800 (PST) From: T0682740@pmail.tepco.co.jp Received: by tepcogw.tepco.co.jp (8.6.9+2.4W/3.3W995032220) id VAA22634; Wed, 14 Feb 1996 21:40:35 +0900 Received: from j1102041 (h1009043) by h1009051.smtpgw.tepco.co.jp (4.1/6.4J.6) id AA27706; Wed, 14 Feb 96 21:31:39 JST Received: from j1101044 by j1102041 (AIX 3.2/UCB 5.64/4.03) id AA47501; Wed, 14 Feb 1996 21:30:29 +0900 Received: from loopback by j1101044.pmail.tepco.co.jp (AIX 3.2/UCB 5.64/4.03) id AA33384; Wed, 14 Feb 1996 21:31:53 +0900 Received: by pmail.tepco.co.jp (ATSON-1) ; 14 Feb 96 21:31:53 JST Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-2022-JP Subject: Re: VM question In-Reply-To: <199602131806.LAA23438@phaeton.artisoft.com> X-From: =?ISO-2022-JP?B?GyRCP0pGIyEhO3E3MRsoSg==?= Date: 14 Feb 96 21:31:15 JST To: terry@lambert.org Cc: hackers@freebsd.org Lines: 33 Message-Id: <3121D613.C680.001@pmail.tepco.co.jp> Content-Type: text/plain; charset=ISO-2022-JP Sender: owner-hackers@freebsd.org Precedence: bulk Hi, > The Usenix papers are generally available for anonymouse FTP, both by > the authors home site, and from the Usenix SAGE group ftp site. The > SAGE FTP site is: ftp://ftp/sage.usenix.org/ Unfortunately they don't hold the latest papers. Only up to 1994 or so. > FreeBSD does not have a mach VM system any more. The MACH VM system > does not operate (implicitly) on a unified buffer cache scheme. Cache > unification is an important win. Is there any paper about unified buffer cache scheme? > You could implement an external demand pager on the basis of trapping > the SIGSEGV signal, and implementing mapping of resources as a result; > you would robably be better off providing a kernel interface, however, > since you would have to coalesce domains to keep the number of entries > small enough to avoid problems. Actually, I'd like to implement a sort of DSM that provides page-in/out over the network transparently to the user process. > There are a couple of Usenix papers on this technique as well; other > papers are available at the CS department of Washington State University's > FTP server. I haven't checked this yet but I'll try it. Thanks! --- Motonori Shindou