Date: Thu, 19 Sep 1996 22:35:24 -0400 (EDT) From: Chuck Robey <chuckr@glue.umd.edu> To: "Ron G. Minnich" <rminnich@Sarnoff.COM> Cc: freebsd-hackers@FreeBSD.org Subject: Re: user-level distributed shared memory available for freebsd Message-ID: <Pine.OSF.3.95.960919223020.8591G-100000@skipper.eng.umd.edu> In-Reply-To: <Pine.SUN.3.91.960916222728.789A-100000@terra>
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On Mon, 16 Sep 1996, Ron G. Minnich wrote: > This system is called ZOUNDS. it's all user mode, no special sysadmin > needed to use it, uses TCP, comes with manual and a sample app. It can > exploit rfork if you have it in your 2.2+ system, provides a simple > shared-file-descriptor rfork loadable module if you have earlier than > 2.2, and for most cases doesn't have to have rfork anyways (There's only > one specific case where it is helpful but not necessary). > > bugs to me, of course. Ron, where is this? I don't know if you have the time to pander to my curiosity on one point, but I'm sure you know the anser to this (if you're not too busy). I know unix in general has never had a really good file locking system. Why doesn't someone write one just for FreeBSD? I've often wondered why I couldn't write something that would look at ufs, and at inodes, say (as a locking point, I think) and make an absolute, enforceable locking call for FreeBSD. I know it would be completely non-portable, but wouldn't it make FreeBSD kinda unique among unixes? I am innocent of the higher level locking strategies (I'm in school for that right now, which is teaching me how dumb I am), but I was wondering if there is some reason it couldn't be done? > > ron > > Ron Minnich |"If you leave out all the killings, D.C. has as > rminnich@sarnoff.com | low a crime rate as many cities" -- > (609)-734-3120 | D.C. Mayor Marion Barry > ftp://ftp.sarnoff.com/pub/mnfs/www/docs/cluster.html > > > ----------------------------+----------------------------------------------- Chuck Robey | Interests include any kind of voice or data chuckr@eng.umd.edu | communications topic, C programming, and Unix. 9120 Edmonston Ct #302 | Greenbelt, MD 20770 | I run Journey2 and n3lxx, both FreeBSD (301) 220-2114 | version 2.2 current -- and great FUN! ----------------------------+-----------------------------------------------
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