Re: ERR in /proc/interrupts

[Andreas Schwarz]

Andreas Schwarz wrote:
> Christian wrote:
>> Andreas Schwarz wrote:
>>> I get a very high ERR count in /proc/interrupts. If I move my USB mouse
>>> the number increases.
>>> 
>>> What does ERR mean? Nothing good, I suppose?
>>> 
>>
>> ../Documentation/filesystems/proc.txt says:
>>
>> ERR is incremented in the case of errors in the IO-APIC bus (the bus 
>> that connects the CPUs in a SMP system. This means that an error has 
>> been detected, the IO-APIC automatically retry the transmission, so it 
>> should not be a big problem, but you should read the SMP-FAQ.
>
> I don't have a SMP kernel. I compiled the kernel with IO APIC support,
> but disabled it later with the noapic kernel boot option.

I recompiled the kernel with both APIC options disabled. Result: ERR is
0, and my USB mouse is no longer choppy.

APIC = evil (at least on my K7S5A Pro)!

-- 
AVR-Tutorial, über 350 Links
Forum für AVRGCC und MSPGCC
-> http://www.mikrocontroller.net

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/