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Joe | 15 Oct 2005 17:00
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Re[8]: my prog

Hello!
Big cheap software store:
http://www.geocities.com/t8a6qechyx0s3/

Nahon Pefteev Felskau Emiliano Nidhal

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Ian Brandt | 24 Oct 2005 23:47

I/O APIC: AMD Errata #22 may be present.


Hi,

I have an Appro 1124s server with a Tyan Thunder K7 S2462 motherboard,
two AMD Athlon MP 1600 processors, the 760 MP chipset, and a single
PCI device that is an Adaptec 2100S SCSI RAID controller (on a PCI
riser/adapter of unknown origin).  I've just upgraded to 2.6.13, and
occasionally my server fails to boot.  It seems to hang at this line:

I/O APIC: AMD Errata #22 may be present. In the event of instability
try booting with the "noapic" option.

That line is however present in my kernel messages even on a
successful boot.  My entire dmesg from a successful boot,
/proc/interrupts, and proc/cpuinfo are below.

I've read Documentation/i386/IO-APIC.txt and have a vague
understanding of what it means.  I will certainly try the noapic
option to see if things settle down, but is there any real world
performance loss in doing so?  Should I be looking into using "...the
pirq= boot parameter to 'hand-construct' IRQ entries"?  Is there
anything else I could do to help squash this bug?

Thanks!

Ian

Linux version 2.6.13-gentoo-r3 (root <at> xxx.yyy.com) (gcc version 3.3.6
(Gentoo 3.3.6, ssp-3.3.6-1.0, pie-8.7.8)) #5 SMP Wed Oct 19 12:01:24
EDT 2005
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Mike Fowler | 25 Oct 2005 12:48
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Re: I/O APIC: AMD Errata #22 may be present.

Ian,

I hava two Athlon MP 1.4 processors with the same errata present. I've 
used the noapic option without any "noticeable" performance loss. I say 
"noticeable" as I have not done any performance tests to qualify that 
statement, but it certainly hasn't hindered me in any way.

Hope this helps!

> Hi,
> 
> I have an Appro 1124s server with a Tyan Thunder K7 S2462 motherboard,
> two AMD Athlon MP 1600 processors, the 760 MP chipset, and a single
> PCI device that is an Adaptec 2100S SCSI RAID controller (on a PCI
> riser/adapter of unknown origin).  I've just upgraded to 2.6.13, and
> occasionally my server fails to boot.  It seems to hang at this line:
> 
> I/O APIC: AMD Errata #22 may be present. In the event of instability
> try booting with the "noapic" option.
> 
> That line is however present in my kernel messages even on a
> successful boot.  My entire dmesg from a successful boot,
> /proc/interrupts, and proc/cpuinfo are below.
> 
> I've read Documentation/i386/IO-APIC.txt and have a vague
> understanding of what it means.  I will certainly try the noapic
> option to see if things settle down, but is there any real world
> performance loss in doing so?  Should I be looking into using "...the
> pirq= boot parameter to 'hand-construct' IRQ entries"?  Is there
> anything else I could do to help squash this bug?
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