From owner-freebsd-hackers Tue May 21 01:24:11 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id BAA07773 for hackers-outgoing; Tue, 21 May 1996 01:24:11 -0700 (PDT) Received: from caipfs.rutgers.edu (root@caipfs.rutgers.edu [128.6.91.100]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id BAA07729; Tue, 21 May 1996 01:24:06 -0700 (PDT) Received: from huahaga.rutgers.edu (huahaga.rutgers.edu [128.6.155.53]) by caipfs.rutgers.edu (8.6.9+bestmx+oldruq+newsunq+grosshack/8.6.9) with ESMTP id EAA03067; Tue, 21 May 1996 04:23:57 -0400 Received: (davem@localhost) by huahaga.rutgers.edu (8.6.9+bestmx+oldruq+newsunq+grosshack/8.6.9) id EAA07997; Tue, 21 May 1996 04:23:57 -0400 Date: Tue, 21 May 1996 04:23:57 -0400 Message-Id: <199605210823.EAA07997@huahaga.rutgers.edu> From: "David S. Miller" To: terry@lambert.org CC: jehamby@lightside.com, jkh@time.cdrom.com, current@freebsd.org, hackers@freebsd.org In-reply-to: <199605210521.WAA29987@phaeton.artisoft.com> (message from Terry Lambert on Mon, 20 May 1996 22:21:33 -0700 (MST)) Subject: Re: Congrats on CURRENT 5/1 SNAP... Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk From: Terry Lambert Date: Mon, 20 May 1996 22:21:33 -0700 (MST) The SunOS LWP's are pretty easy. Actually SunOS does do lwp scheduling where it checks for AST's etc. although I don't know how relevant that is to whats being discussed. Furthermore, the way Solaris does threads in the kernel has been proven to be a lose (pre-emption, a billion mutexes in the kernel, another thousand read writer locks) and expect the industry to move in "another" direction. Computer science has proven that current smp technology (read as: what SVR4.2MP based kernels do right now) cannot scale past 32 cpu's without an exponential loss in performance. Clustering is the answer and can scale to more CPU's than you can count in an unsigned char. ;-) Later, David S. Miller davem@caip.rutgers.edu