Date: Sun, 29 Sep 1996 17:07:52 -0700 From: erich@uruk.org To: freebsd-smp@freebsd.org Subject: Re: Tyan S1562D Tomcat2 Message-ID: <199609300007.RAA28992@uruk.org> In-Reply-To: Your message of "Mon, 30 Sep 1996 07:44:58 %2B0800." <199609292344.HAA04870@spinner.DIALix.COM>
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[I didn't copy this to this list last time I sent it] Peter Wemm <peter@spinner.DIALix.COM> writes: > erich@uruk.org wrote: > > > I have 64MB and see something like this problem quite a bit once I turn > > on the second CPU (well, if I'm doing something big like a GCC compile). > > I'm not claiming it is exactly the same problem. > > > > Interestingly enough, it always seems particular problems are caused by > > "ln" (it gets memory core dumps very often) and GCC's "enquire" simply > > locks the machine solid. > > Hmm. I have some old 386 motherboards that lock solid on enquire, I seem > to recall it was dismissed as "FERR->INT 13 linkage foulup".. My suspicion has been a floating-point error problem. > Perhaps enquire is triggering a floating point IRQ-13 on the second cpu > which is currently not being handled? The second cpu does not get any > IRQ's at all at present, and if IRQ-13 is being generated directly within > the cpu then that might explain it. Yikes!!! This is definitely a major problem. With the APIC hardware, the I/O APIC is handling PIC interrupts only. Anything that is directly handled via the CPU or local APIC will of course generate interrupts on the CPU in question. -- Erich Stefan Boleyn \_ E-mail (preferred): <erich@uruk.org> Mad Genius wanna-be, CyberMuffin \__ (finger me for other stats) Web: http://www.uruk.org/~erich/ Motto: "I'll live forever or die trying" -- Erich Stefan Boleyn \_ E-mail (preferred): <erich@uruk.org> Mad Genius wanna-be, CyberMuffin \__ (finger me for other stats) Web: http://www.uruk.org/~erich/ Motto: "I'll live forever or die trying"
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