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Date: Wed, 20 Oct 2004 21:43:50 -0700 (PDT)
From: Nik Azim Azam <nskyline_r35@yahoo.com>
To: Julian Elischer <julian@elischer.org>
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cc: freebsd-current@freebsd.org
Subject: Re: number of CPUs and IPI panic
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i've set the kern.sched.ipiwakeup.enabled=0, it didn't
help to fix the problem. i'm going to try the patch
Stephan posted later today.

thanks,
nik.

--- Julian Elischer <julian@elischer.org> wrote:

> you can remove a lot of the IPIs by turning off
> sysctl kern.sched.ipiwakeup.enabled   (if it's
> turned on)
> 
> 
> Nik Azim Azam wrote:
> 
> >sorry for not posting this information earlier.
> >
> >i'm running on SCHED_4BSD, with PREEMPTION. the
> same
> >panic occours without PREEMPTION. the kernel is
> >generic except that i've removed some devices that
> i
> >dont need.
> >
> >--- Gavin Atkinson <gavin.atkinson@ury.york.ac.uk>
> >wrote:
> >
> >  
> >
> >>On Wed, 20 Oct 2004, Nik Azim Azam wrote:
> >>
> >>    
> >>
> >>>hello list,
> >>>
> >>>i'm doing some testing on a 6 cpu pentium II
> >>>      
> >>>
> >>overdrive
> >>    
> >>
> >>>computer with 6-CURRENT. with 6 cpus, the system
> >>>      
> >>>
> >>will
> >>    
> >>
> >>>panic easily with moderate load (previous IPI is
> >>>stuck). i edited sys/i386/sys/param.h file and
> >>>      
> >>>
> >>lowered
> >>    
> >>
> >>>the MAXCPU to 4. now the system is running with 4
> >>>      
> >>>
> >>cpus
> >>    
> >>
> >>>and it survived a make buildworld + portupgrade
> at
> >>>      
> >>>
> >>the
> >>    
> >>
> >>>same time.
> >>>
> >>>is this a known problem? i can give more
> >>>      
> >>>
> >>information
> >>    
> >>
> >>>if anyone interested.
> >>>      
> >>>
> >>Are you using SCHED_ULE? (I believe it's the
> default
> >>in 6-CURRENT...)
> >>
> >>If so, try with SCHED_4BSD. ULE has known problems
> >>at the moment.
> >>
> >>Gavin
> >>
> >>    
> >>
> >
> >
> >
> >		
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> >  
> >
> 
> 



		
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