Re: number of CPUs and IPI panic

my box survived a make buildworld with the patch.
without the patch, it will crash after 20-30 mins.

i will test the patch further. good work, Stephan.

thanks,
nik.

--- Stephan Uphoff <ups_at_tree.com> wrote:

> On Mon, 2004-11-15 at 22:10, Doug White wrote:
> > On Fri, 12 Nov 2004, Stephan Uphoff wrote:
> > 
> > > On Fri, 2004-11-12 at 09:19, Nik Azim Azam
> wrote:
> > > > Win2K Advanced Server works just fine here.
> > >
> > > The root cause seems to be a misunderstanding of
> the interrupt delivery
> > > and buffering mechanism. The fix may take a few
> days since it probably
> > > requires extensive changes to the IPI layer.
> > 
> > [getting in late on this]
> > 
> > Tomorrow I will have access to a Dell PowerEdge
> 6500 (4x500MHz) I can use
> > to capture info or test patches. Or see if the bug
> reproduces there in the
> > first place :)
> > 
> > rwatson mumbled something about wanting to
> determine what triggered the
> > prior IPI that the panic later trips over.  I'll
> have to find a sutiable
> > place to hide that information...
> 
> Hopefully we can skip the debugging phase and go
> directly to the testing
> phase. However it would be helpful to know if the
> PowerEdge 6500
> encounters any problems without the patch.
> 
> The feedback I have received so far looks promising:
> 
> Andy Farkas wrote:
> >> You can download the patch at:
> >>       http://people.freebsd.org/~ups/ipi4_patch
> >>
> >> Any feedback is appreciated.
> >>
> >>       Stephan
> >>
> > I have been hammering the box for the last 4 hours
> without
> > a panic.
> > 
> > Without your patch, I could easily get a panic by
> boot -s then
> > fsck. I did this twice (without panic) using your
> patch.
> > 
> > Without your patch, I would usually get a panic
> during make
> > buildworld -j4. So far with your patch its already
> done a
> > buildworld -j8, and its about to finish a
> buildworld -j4.
> > (2 buildworld in a row)
> > 
> > This is good indeed.
> > 
> > -andyf
> > 
> > ps. ok to post to list.
> 
> 
> 



		
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