Date: Mon, 27 Jan 1997 20:57:43 -0800 From: David Greenman <dg@root.com> To: Lars Jonas Olsson <ljo@Mcs.Net> Cc: hackers@freebsd.org Subject: Re: de0 timeouts w 486 CPU Message-ID: <199701280457.UAA13857@root.com> In-Reply-To: Your message of "Mon, 27 Jan 1997 15:34:19 CST." <199701272134.PAA10766@Venus.mcs.net>
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>I have a 486DX4-100 system that is doing make worlds fine, but >generates a lot of: > >de0: system error: master abort > >messages with a current kernel. With a 2.1R kernel it was >generating illegal interrupt errors for de0. > Any guess if this is bug in the if_de.c driver or a hardware problem? >The rate of messages is 5-30/hour on a system not doing much >networking. I would guess that it's a PCI DMA problem on the motherboard. There were quite a few 486 PCI machines that had really bad PCI performance (perhaps due to incorrect chipset configuration?). You may wish to look for any BIOS settings related to PCI write buffer, etc.. -DG David Greenman Core-team/Principal Architect, The FreeBSD Project
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