From owner-freebsd-hackers Mon Dec 6 13:25:26 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from screech.weirdnoise.com (209-128-78-198.bayarea.net [209.128.78.198]) by hub.freebsd.org (Postfix) with ESMTP id 3488414D74; Mon, 6 Dec 1999 13:25:20 -0800 (PST) (envelope-from edhall@screech.weirdnoise.com) Received: from screech.weirdnoise.com (localhost [127.0.0.1]) by screech.weirdnoise.com (8.8.7/8.8.7) with ESMTP id NAA30946; Mon, 6 Dec 1999 13:26:38 -0800 Message-Id: <199912062126.NAA30946@screech.weirdnoise.com> X-Mailer: exmh version 2.0.2 To: Matthew Dillon Cc: "Jonathan M. Bresler" , kris@hub.freebsd.org, freebsd-hackers@FreeBSD.ORG Subject: Re: PCI DMA lockups in 3.2 (3.3 maybe?) In-Reply-To: Your message of "Mon, 06 Dec 1999 12:40:59 PST." <199912062040.MAA72445@apollo.backplane.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 06 Dec 1999 13:26:38 -0800 From: Ed Hall Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG : you wrote: : : I wrote: : :4) Using a different SCSI driver (Peter managed to get a driver from 4.0 : : hooked up under 3.3, and it survived two days of torture that would : : have toasted things within an hour using the stock driver; you'll have : : to ask him for details). : : Ed, this is great stuff! : : Are you sure about #4? Is that the same ncr.c driver or something : else? There are only a few differences between the 3.x and 4.x : /usr/src/sys/pci/ncr.c drivers. Which Peter, Peter Wemm? It was Peter Wemm. I may be misunderstanding just what he did--trying the 4.0 driver was just one several experiments he proposed and performed. And saying that it "worked" is provisional; two days of testing strongly suggests that it reduced the problem with 3.3 to acceptible levels for my application. Is it truly a "fix?" I don't know. -Ed To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message