From owner-freebsd-smp Sun Aug 31 12:09:13 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id MAA13980 for smp-outgoing; Sun, 31 Aug 1997 12:09:13 -0700 (PDT) Received: from tweetie-bird.cs.washington.edu (tweetie-bird.cs.washington.edu [128.95.2.46]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id MAA13972 for ; Sun, 31 Aug 1997 12:09:09 -0700 (PDT) From: mef@cs.washington.edu Received: (mef@localhost) by tweetie-bird.cs.washington.edu (8.8.5+CS/7.2ws+) id MAA12729; Sun, 31 Aug 1997 12:09:24 -0700 (PDT) Date: Sun, 31 Aug 1997 12:09:24 -0700 (PDT) Message-Id: <199708311909.MAA12729@tweetie-bird.cs.washington.edu> To: Shimon@i-connect.net CC: FreeBSD-SMP@FreeBSD.ORG In-reply-to: (message from Simon Shapiro on Fri, 15 Aug 1997 22:55:50 -0700 (PDT)) Subject: Re: Open Issues on P6DNH Sender: owner-freebsd-smp@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Simon, What the deal with the P6DNH motherboard from Supermicro? A while back you posted a set of problems to the smp mailing list. Are these now resolved? Is the P6DNH MB a good one to buy if one wants to play around with i2o? Thanks, Marc Date: Fri, 15 Aug 1997 22:55:50 -0700 (PDT) Organization: Atlas Telecom From: Simon Shapiro Hi Steve, Sorry for the long delay. Had to design and code a new filesystem type, fight a bunch of political battles, and get a misely raise after a wonderful review (``words are cheaper than cash'', was my comment). Hope you are doing well. * Although it compiles, the SoundBlaster driver is less than functional; cat foo.au > /dev/audio just hangs there. Works fine under UP on the same platform. * The fxp driver seems to not get interrupts at all. Everything times out eventually and works like a very slow polled system. This happens IN FRONT of the i960 bridge. The fpa (fddi) driver, the DPT driver all work fine. * If you put COM4 on irq 7 it is there, on irq 9 it is not found. A conflict with the sb? The sb is mapped at 220. com4 is 2e8. * Something strange. Booted SMP, started X11, xperfmon++ insisted that libXaw was not there if ``shimon'' tried to tun it. Was there if root ran it. Permissions? Nope. I re-ompiled and re-installed it. Now root could see the executable (in /usr/X11R6/bin) but not ``shimon''. Rebooted and both are fine. Never seen this one before. * Interrupt latency is still not so hot. The typical DPT driver in UP serves an interrupt in 3-55us. in SMP it takes 11-1000039us. * I am getting an enormous number of spurious interrupts. In UP the typical count is 0 aborted (due to errors) and 1 for spurious (int routine was called but hardware said ``not me''. In SMP, the numbrs are 0 and 62090. The 1 spurious is explainable ( a bug in transitioning from polled mode to interrupt mode during boot. If there is anything I can do to help, let me know. I have sendero-ppp now run smp. I have another machine I will setup tomorrow (new Brass) which will be the same hardware. Simon