From owner-freebsd-net Fri Jun 28 10:48:15 2002 Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5951F37B400 for ; Fri, 28 Jun 2002 10:48:11 -0700 (PDT) Received: from iguana.icir.org (iguana.icir.org [192.150.187.36]) by mx1.FreeBSD.org (Postfix) with ESMTP id 129A443E0A for ; Fri, 28 Jun 2002 10:48:11 -0700 (PDT) (envelope-from rizzo@iguana.icir.org) Received: (from rizzo@localhost) by iguana.icir.org (8.11.6/8.11.3) id g5SHm3160920; Fri, 28 Jun 2002 10:48:03 -0700 (PDT) (envelope-from rizzo) Date: Fri, 28 Jun 2002 10:48:03 -0700 From: Luigi Rizzo To: Mike Silbersack Cc: net@FreeBSD.ORG Subject: Re: Junior Kernel hacker task? Re: interface stalling on tx ? Message-ID: <20020628104803.B60755@iguana.icir.org> References: <20020628005253.B55603@iguana.icir.org> <20020628124055.L72733-100000@patrocles.silby.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <20020628124055.L72733-100000@patrocles.silby.com>; from silby@silby.com on Fri, Jun 28, 2002 at 12:45:30PM -0500 Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Fri, Jun 28, 2002 at 12:45:30PM -0500, Mike Silbersack wrote: ... > I think that it would probably be easier to go and fix many of the network > drivers than to abstract the watchdog timer more. probably agreed. The changes to the individual drivers are not large, and a bit of auditing might be necessary because sometimes there are also race conditions involved in setting/clearing the timer. At this point i believe the "one card at a time" approach is the most productive one. A remark is that as time goes on, boxes become faster and faster, and they tend to trigger a lot of performance or timing bugs in the systems with which we have lived happily for ages. cheers luigi ----------------------------------+----------------------------------------- Luigi RIZZO, luigi@iet.unipi.it . ICSI (on leave from Univ. di Pisa) http://www.iet.unipi.it/~luigi/ . 1947 Center St, Berkeley CA 94704 Phone: (510) 666 2927 ----------------------------------+----------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message