Date: Tue, 4 Feb 1997 22:36:50 +0100 From: j@uriah.heep.sax.de (J Wunsch) To: smp@FreeBSD.ORG Subject: Re: My first SMP kernel... Message-ID: <Mutt.19970204223650.j@uriah.heep.sax.de> In-Reply-To: <199702041327.VAA15354@spinner.DIALix.COM>; from Peter Wemm on Feb 4, 1997 21:27:42 %2B0800 References: <Mutt.19970204092707.j@uriah.heep.sax.de> <199702041327.VAA15354@spinner.DIALix.COM>
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As Peter Wemm wrote: > > The numbers on the bottom lid end up in SSS. > > SSS chips are theoretically the "best you can get".. ie: they don't need > voltage twiddles etc to get them to work. Yes, i also thought so. > What do you get on the dmesg output when booting a non-smp kernel? I have to look, but as i wrote earlier, it will probably take some time until this board will boot a freebsd disk for the next time. > npx0: INT 16 interface > npx0: Pentium floating point divide (fdiv) flaw present! No, i haven't seen the latter. I didn't even know this message exists. :) Last time i've been working with such a flawed P90, this was at my previous employer under FreeBSD 1.1.5.1 (which is still working there). > I seem to recall dire warnings about mixing different stepping/S number > chips from the early runs.. I believe the apic timing etc was tweaked a > bit early on, but they now seem to have it sorted out.. But if one of the > chips is old, you might be in for fun. No, both my CPUs were rather recent. And, i ran into those troubles even with only one CPU (but the SMP kernel). The machine suffered from some SCSI bus mistermination earlier. Maybe it was just this, and some broken byte sneaked into some C or object file. I think i'll redo the experiment some day again. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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