From owner-freebsd-hackers Fri Aug 22 11:16:22 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id LAA23731 for hackers-outgoing; Fri, 22 Aug 1997 11:16:22 -0700 (PDT) Received: from phaeton.artisoft.com (phaeton.Artisoft.COM [198.17.250.50]) by hub.freebsd.org (8.8.7/8.8.7) with SMTP id LAA23719 for ; Fri, 22 Aug 1997 11:16:14 -0700 (PDT) Received: (from terry@localhost) by phaeton.artisoft.com (8.6.11/8.6.9) id LAA26407; Fri, 22 Aug 1997 11:07:13 -0700 From: Terry Lambert Message-Id: <199708221807.LAA26407@phaeton.artisoft.com> Subject: Re: Final request for help with release. (DPT boot floppy) To: asami@cs.berkeley.edu (Satoshi Asami) Date: Fri, 22 Aug 1997 11:07:13 -0700 (MST) Cc: Shimon@i-Connect.Net, tom@sdf.com, hackers@FreeBSD.ORG, mrcpu@cdsnet.net, nate@mt.sri.com In-Reply-To: <199708221157.EAA00987@silvia.HIP.Berkeley.EDU> from "Satoshi Asami" at Aug 22, 97 04:57:39 am X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > I have also seen mysterious lockups (for a few seconds) with Solaris > x86 when I bombarded more than two twin-channel controllers (Adaptec > 3940W/UW) with lots of requests. FreeBSD had no problems whatsoever. This is probably a PCI issue. Most Intel PCI bridges do not correctly arbitrate between more than two bus mastering PCI devices simultaneously. Stefan posted about this a while back. I think there's a newer chipset that actually supports any number of devices (up to the number of slots, anyway), but I don't remember the name of the thing off the top of my head. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.