From owner-freebsd-hackers Tue Mar 26 21:46:40 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id VAA23794 for hackers-outgoing; Tue, 26 Mar 1996 21:46:40 -0800 (PST) Received: from hq.icb.chel.su (icb-rich-gw.icb.chel.su [193.125.10.34]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id VAA23782 for ; Tue, 26 Mar 1996 21:46:27 -0800 (PST) Received: from localhost (babkin@localhost) by hq.icb.chel.su (8.6.5/8.6.5) id KAA14498; Wed, 27 Mar 1996 10:40:10 +0500 From: "Serge A. Babkin" Message-Id: <199603270540.KAA14498@hq.icb.chel.su> Subject: Re: OSF Micro Kernel for Linux/FreeBSD/etc To: dgy@rtd.com (Don Yuniskis) Date: Wed, 27 Mar 1996 10:40:09 +0500 (GMT+0500) Cc: mikebo@tellabs.com, freebsd-hackers@freefall.FreeBSD.ORG In-Reply-To: <199603262109.OAA13438@seagull.rtd.com> from "Don Yuniskis" at Mar 26, 96 02:09:25 pm X-Mailer: ELM [version 2.4 PL23] Content-Type: text Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > > Is the FreeBSD core team open to the idea of possibly moving to a Mach > > 3.0 micro-kernel, or is there significant sentimental attachment to > > the traditional, monolithic BSD kernel? > > Um, speaking *mostly* from ignorance but I think Mklinux is implemented > as a single-server atop Mach. So, in that sense, it's still a monolithic > kernel (albeit residing atop a microkernel). I don't think they've really > gone too far afield and tried for a multi-server... Can someone shed any > more light on this? I have talked with peoples from DEC Moscow about DigitalUnix (former OSF/1). They said that the last version of it has monolithic kernel on top of Mach. They said also that DEC did this for both performance and stability reasons. So it looks like the microkernel is a bad idea yet. Although, I know that peoples in DEC Moscow indeed have very little information from DEC about anything except prices :-) and their words may be completely wrong. -SB