Messages in this thread |  | | | Date | Sun, 22 Apr 2001 11:22:24 +0200 | | From | Hermann Himmelbauer <> | | Subject | Re: APIC-Errors+Crashes on GA 586DX, 2.2.17/2.4.3 |
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Karsten Keil wrote: > > I have here the same board with 2*233 MMX and don't see this kind of ISDN > error on recent 2.2 kernels, but got also lot of APIC errors with the > 2.3/2.4, because the APIC errors are only reported in 2.3/4.
Right - same behavior here, no APIC errors with 2.2 (as they are not reported). The ISDN error happens very seldom (4 times last year) and is not reproducable - which is not so with the eth0 errors (as eth0 locks at around 500-1000MB while copying data).
> > kernel with the "noapic" parameter. The strange thing is that the APIC > > errors are still there, at least there are a lot less than before, > > moreover the system seems slower but at least more stable. BTW, why are > > there still APIC errors although there are no interrupts assigned to > > CPU1 (as seen in /proc/interrupts). > > > > Yes, no APIC means all IRQ are handled by one CPU only, so communication > errors about IRQ events on the APIC bus don't care.
Hmmm, so does that mean that those checksum errors have no effect on the stability of my system?
> > What I wonder is why linux outputs a line like this (with noapic): > > <4>Intel MultiProcessor Specification v1.1 > > <4> Virtual Wire compatibility mode. > > > > although the board seems to be capable of MPS 1.4 (as there is a Bios > > option "MPS 1.4 for single Processor). > > > > One or 2 years ago I was playing with these options, it seemed that setting > it to 1.1 reduce the error count a little bit, but this maybe a > misinterpretation.
How did you do that? The BIOS Option only enables the use of MPS 1.4 for single CPU but I could not find an option for switching between 1.1/1.4. Is there a way to force the Linux kernel to use 1.4?
Many thanks for your quick answer!
Best Regards, Hermann
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