Date: Tue, 22 Feb 2000 21:11:10 -0800 From: Doug Barton <Doug@gorean.org> To: freebsd-smp@FreeBSD.ORG Subject: Re: Compaq Proliant 6500 Message-ID: <38B36BEE.9DCB0DED@gorean.org> References: <3B1064C98BAFD311B95E009027B11E4F14D224@fsjubj07.ssg.gunter.af.mil>
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John.Hubbard@Gunter.AF.mil wrote:
>
> I've posted to 'questions' a couple of times and they directed me over
> here. I'm trying to get SMP properly running on my Proliant 6500.
> I started with SmartStart, chose 'Other' and didn't install a system
> partition. Then I install 3.4-RELEASE. Running mptable gives me the
> following:
>
> NCPU=2
> NAPIC=1
> NBUS=3
> NINTR=49
HRrrmmmm... that brings up an interesting question. I have an SMP box on
which I ran mptable, and got the following at the end:
-------------------------------------------------------------------------------
# SMP kernel config file options:
# Required:
options SMP # Symmetric MultiProcessor Kernel
options APIC_IO # Symmetric (APIC) I/O
# Optional (built-in defaults will work in most cases):
#options NCPU=2 # number of CPUs
#options NBUS=2 # number of busses
#options NAPIC=1 # number of IO APICs
#options NINTR=24 # number of INTs
===============================================================================
The only thing different in that list from the commented out defaults in
GENERIC is NBUS. Do I gain anything by explicitly setting NBUS=2 in my
kernel config, as opposed to just allowing it to use the default 4? I would
think that if I had more busses than 4 that this would be significant, but
I'm always interested in learning new things. :)
BTW, took a look at the -dmesg option and it seems to me that it would be
better to use /var/run/dmesg.boot since just using 'system( "dmesg" );' can
include lots of non-boot related info, and might not actually include the
boot info if there have been a lot of kernel messages. I can do a patch if
anyone is interested....
Thanks,
Doug
--
"Welcome to the desert of the real."
- Laurence Fishburne as Morpheus, "The Matrix"
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