From owner-freebsd-current Tue Apr 17 18:53:11 2001 Delivered-To: freebsd-current@freebsd.org Received: from fw.wintelcom.net (ns1.wintelcom.net [209.1.153.20]) by hub.freebsd.org (Postfix) with ESMTP id 00E2C37B422 for ; Tue, 17 Apr 2001 18:53:09 -0700 (PDT) (envelope-from bright@fw.wintelcom.net) Received: (from bright@localhost) by fw.wintelcom.net (8.10.0/8.10.0) id f3I1qsm03948; Tue, 17 Apr 2001 18:52:54 -0700 (PDT) Date: Tue, 17 Apr 2001 18:52:54 -0700 From: Alfred Perlstein To: "E.B. Dreger" Cc: Matt Dillon , Greg Lehey , "Justin T. Gibbs" , Doug Barton , "current @ freebsd . org" Subject: Re: Kernel preemption, yes or no? (was: Filesystem gets a huge performance boost) Message-ID: <20010417185254.E976@fw.wintelcom.net> References: <20010417182840.A976@fw.wintelcom.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from eddy+public+spam@noc.everquick.net on Wed, Apr 18, 2001 at 01:48:06AM +0000 X-all-your-base: are belong to us. Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG * E.B. Dreger [010417 18:48] wrote: > > Date: Tue, 17 Apr 2001 18:28:40 -0700 > > From: Alfred Perlstein > > > > 1) interrupts are again fan-in, meaning if you block an interrupt > > class on one cpu you block them on all cpus > > When would this be a bad case? i.e., if an interrupt [class] must be > blocked, would we not it blocked across the board? It'd be nice if you had something like 16 nic cards working independantly of each other to not be in the same collision domain if they don't have to. -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] Daemon News Magazine in your snail-mail! http://magazine.daemonnews.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message