From owner-freebsd-questions Tue Apr 6 0:33:56 1999 Delivered-To: freebsd-questions@freebsd.org Received: from asooo.irridia.com (asooo.flowerfire.com [206.221.233.20]) by hub.freebsd.org (Postfix) with ESMTP id 2324B15563 for ; Tue, 6 Apr 1999 00:33:54 -0700 (PDT) (envelope-from kenb@asooo.irridia.com) Received: (from kenb@localhost) by asooo.irridia.com (8.9.1/8.9.1) id CAA10029 for freebsd-questions@freebsd.org; Tue, 6 Apr 1999 02:31:57 -0500 (CDT) (envelope-from kenb) From: Ken Brownfield Message-Id: <199904060731.CAA10029@asooo.irridia.com> Subject: Disk I/O crushes Ethernet I/O (3.0R) To: freebsd-questions@freebsd.org Date: Tue, 6 Apr 1999 02:31:57 -0500 (CDT) X-Mailer: ELM [version 2.4ME+ PL43 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hello, I hope this is the appropriate list for this type of question. Tons of web/mailing list searches haven't turned up anything useful. I'm currently running 3.0R on the following hardware: SuperMicro P6DLE Dual P2/233, 340MB RAM 12GB IDE drive Intel EtherExpress PRO/100B on 10BT network During periods of disk activity (copying a large file, etc.) all network traffic virtually comes to a halt. If I run the cp during an FTP file transfer, my network transfer rate is dropped by about 80%. Other network services suffer the same massive packet deprivation. Any sustained disk access will cause it, and all network transfers (in and out) are effected. The outage starts and stops exactly when the cp (or other access) starts and stops. This doesn't seem to be an MBUF problem, and I haven't been able to find a specific mention of this sort of problem. Is this something inherent with the kernel, the IDE driver, the fxp driver, or FreeBSD's SMP implementation? Or is this most likely an IRQ conflict or bad IRQ choice for the ether card? I plan on upgrading to 3.1R soon, so IRQ twiddling will be possible. If anyone has any insight I would _greatly_ appreciate it. I'll summarize if necessary. Thanks, -- Ken Brownfield kenb@irridia.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message