Re: [PATCH 08/19] perf c2c: Shared data analyser

From: Peter Zijlstra
Date: Tue Mar 04 2014 - 04:43:09 EST


On Mon, Mar 03, 2014 at 10:36:25PM +0100, Andi Kleen wrote:
> > Heh. I never thought about that. And sure enough a quick test with
> > mem-stores commented out produced the same results (minus the stores).
> >
> > One would just have to 'figure' out what cacheline offsets are causing the
> > HITMs.
>
> Often that can be determined statically from the instruction (register-offset)
>
> However keep in mind that there is some skid so the instruction may not
> be correct.

Even with the real_ip pebs field? I thought the whole purpose of that
was to tag the actual instruction matching the event.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/