From owner-freebsd-current Fri Apr 24 11:58:10 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id LAA01355 for freebsd-current-outgoing; Fri, 24 Apr 1998 11:58:10 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from whistle.com (s205m131.whistle.com [207.76.205.131]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id LAA01350 for ; Fri, 24 Apr 1998 11:58:09 -0700 (PDT) (envelope-from archie@whistle.com) Received: (from smap@localhost) by whistle.com (8.7.5/8.6.12) id LAA09297; Fri, 24 Apr 1998 11:57:38 -0700 (PDT) Received: from bubba.whistle.com(207.76.205.7) by whistle.com via smap (V1.3) id sma009291; Fri Apr 24 11:57:25 1998 Received: (from archie@localhost) by bubba.whistle.com (8.8.7/8.6.12) id LAA01440; Fri, 24 Apr 1998 11:57:24 -0700 (PDT) From: Archie Cobbs Message-Id: <199804241857.LAA01440@bubba.whistle.com> Subject: Re: Bridging... In-Reply-To: from Andrzej Bialecki at "Apr 24, 98 11:36:27 am" To: abial@nask.pl (Andrzej Bialecki) Date: Fri, 24 Apr 1998 11:57:24 -0700 (PDT) Cc: gurney_j@resnet.uoregon.edu, luigi@labinfo.iet.unipi.it, current@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL31 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Andrzej Bialecki writes: > I wonder how Cisco's are doing this, from the operating system's point of > view... When you configure the type of routing protocol on a Cisco, it > looks very similar to starting a new process (e.g. ospf router), and when > you look into memory statistics, it seems that their IOS has a notion of > processes... This is not certain, but I believe IOS is a fully preemptable (ie, in the kernel) operating system that has no VM system.. all one big flat memory space. So it's real easy to have threads, both user and kernel ones.. Of course, all your processes have to be "cooperating" for this to work :-) -Archie ___________________________________________________________________________ Archie Cobbs * Whistle Communications, Inc. * http://www.whistle.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message