Date: Fri, 15 Aug 1997 22:55:50 -0700 (PDT) From: Simon Shapiro <Shimon@i-connect.net> To: FreeBSD-SMP@FreeBSD.org, Steve Passe <fsmp@FreeBSD.org> Subject: Open Issues on P6DNH Message-ID: <XFMail.970815225550.Shimon@i-Connect.Net>
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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
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