Messages in this thread | | | Date | Fri, 07 Nov 2008 17:12:33 +0100 | From | Eric Dumazet <> | Subject | Re: linux-2.6.28-rc2 regression : oprofile doesnt work anymore ? |
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Andi Kleen a écrit : > On Fri, Nov 07, 2008 at 04:13:42PM +0100, Eric Dumazet wrote: >> Andi Kleen a écrit : >>> Can you please test this patch and see if it solves the problem? >>> >>> Thanks, >>> -Andi >>> >>> --- >>> >>> oprofile: Fix p6 counter overflow check >>> >>> Fix the counter overflow check for CPUs with counter width > 32 >>> >>> I had a similar change in a different patch that I didn't submit >>> and I didn't notice the problem earlier because it was always >>> tested together. >>> >>> Signed-off-by: Andi Kleen <ak@linux.intel.com> >>> >> Thanks Andi >> >> Unfortunatly, there is still a freeze of NMIS after a while. > > How long is the while? >
Less than 20 seconds if fully loaded with "tbench 8" on my 8 cpus machine.
With your patch, many events are handled by oprofile (about 10.000.000 last time I tried) before freeze.
Without your patch, freeze was very very fast, no more than 10.000 NMI...
> I don't see this here on a Merom when I let it run for > 10 minutes or so. > > You might need to bisect it.
Too many bugs during bisection unfortunatly, machine doesnt boot :(
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