Re: cache hit/miss detection

From: Micah (fanmail_at_micah-wedemeyer.net)
Date: 09/18/03 

Date: Wed, 17 Sep 2003 22:52:21 -0400

"Kasper Dupont" <kasperd@daimi.au.dk> wrote in message
news:3F68E7BF.9EBCD226@daimi.au.dk...
> Micah wrote:
> >
> > Does anyone know of any tools that can determine what the CPU cache
hit/miss
> > statistics are for a certain process? Especially nice would be a tool
that
> > works on a multi-processor machine.
>
> I think there does exist a program with some relation to valgrind, that
will
> simulate a run of your program, and report very accurate and detailed
cache
> statistics. If you need to meassure an actual running program, you are
going
> to need help from the CPU. AFAIK all recent Intel CPUs provide some
statistics
> for purposes like this, I don't know the details or any program utilizing
it
> though.
>
> --
> Kasper Dupont -- der bruger for meget tid paa usenet.
> For sending spam use mailto:aaarep@daimi.au.dk
> Their business was zero and it was shrinking.

Can cachegrind (the part of valgrind for cache info) simulate mutliple CPUs?
That is really important for this benchmarking project.

Thanks,
Micah

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