From owner-freebsd-hackers Mon Nov 27 16: 9: 7 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from shell.unixbox.com (shell.unixbox.com [207.211.45.65]) by hub.freebsd.org (Postfix) with ESMTP id A46EF37B4C5 for ; Mon, 27 Nov 2000 16:09:04 -0800 (PST) Received: from localhost (fengyue@localhost) by shell.unixbox.com (8.11.1/8.11.0) with ESMTP id eAS0An931632; Mon, 27 Nov 2000 16:10:49 -0800 (PST) Date: Mon, 27 Nov 2000 16:10:49 -0800 (PST) From: FengYue X-Sender: fengyue@shell.unixbox.com To: Alfred Perlstein Cc: David Petrou , freebsd-hackers@FreeBSD.ORG Subject: Re: thread model questions In-Reply-To: <20001127150916.R8051@fw.wintelcom.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Mon, 27 Nov 2000, Alfred Perlstein wrote: ->* David Petrou [001127 14:41] wrote: ->> thanks for the quick reply... ->> ->> > > 3. if preemptive, does that occur at user-level, or by the kernel? ->> > > (and how costly is it?) ->> > ->> > It's a mix, and very cheap. I thought it's preemptive purely at user-level since the threads are scheduled by thread lib at user-level only. No? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message