From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <andi@firstfloor.org>
Subject: Re: Understanding perf mem -t load results
Date: Tue, 24 Dec 2013 22:27:28 +0100
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To: Manuel Selva <selva.manuel@gmail.com>
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> I checked what can be measured with the offcore facility. I can ask
> to count remote memory accesses, but now I am not sure PEBS is
> enable for these events. If the answer is no, I can't accurately
> identify remote memory accesses with offcore events ? As a
> consequence I am wondering if there is a way to do such thing ?

The OFFCORE events are not PEBS enabled. However the memory PEBS
events report the same information (with some limitations) in
the PEBS record (and perf reports this information) 

In general you cannot accurately profile all memory accesses.

-Andi

-- 
ak@linux.intel.com -- Speaking for myself only.