From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <andi@firstfloor.org>
Subject: Re: Not getting PMC events on Broadwell-EX
Date: Tue, 08 Aug 2017 09:32:25 -0700
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References: <B10BA2E5-3BC7-481F-8EC7-DFEB229526EC@vmware.com>
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To: "H. Taheri" <rezato@gmail.com>
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"H. Taheri" <rezato@gmail.com> writes:

> I am getting 0s, or <not supported>, or <not counted>  for events that are supposed to work on this processor. For example, according to Intel documentation, L2_RQSTS.MISS and L2_RQSTS.REFERENCES are supported on this processor with event code 0x24 and unit masks 0x3f and 0xff. But when I run perf stat (also with -d -d -d to see if the built-in command options can get the cache stats), I get:
>
> [root@prme-perf-broadwell-2 intel]# perf stat -d -d -d -e cycles -e instructions -e r24ff -e r243f sleep 10

You're missing -a, so it's only measuring sleep itself.

-Andi