Re: Event not supported

[Baptiste Lepers <baptiste.lepers@inria.fr>]

Hi,

I think that the format you are using is not correct.

To profile event 0xXXX with unit mask YY, the format is rX0000YYXX, so in your case: r1000002e0.

Also, beware that the unitmask in the documentation tells you the _bit(s)_ that need to be set.
So :
  From Local Node to Node 0 = r1000001e0
  From Local Node to Node 1 = r1000002e0
  From Local Node to Node 2 = r1000004e0
  From Local Node to Node 3 = r1000008e0
  From Local Node to Node 4 = r1000010e0
  From Local Node to Node 0 & 1 & 2 = r1000007e0
  etc.


Cheers,
Baptiste.

----- Mail original -----
> De: "Martin Ichilevici de Oliveira" <martin.i.oliveira@gmail.com>
> À: linux-perf-users@vger.kernel.org
> Envoyé: Mardi 18 Février 2014 17:51:46
> Objet: Event not supported
> 
> Hello,
> 
> I'm still learning perf, so I apologize in advance if my questions are
> too simple and not suited here. I did, however, searched the web and
> tried to find a solution by myself before posting to this mailing
> list.
> 
> From my manufacturer's manual, I chose an event I'm interested in
> monitoring. They also list unit masks, as below:
> 
> UnitMask    Description
> 7                  From Local node to Node 7
> 6                  From Local node to Node 6
> 5                  From Local node to Node 5
> 4                  From Local node to Node 4
> 3                  From Local node to Node 3
> 2                  From Local node to Node 2
> 1                  From Local node to Node 1
> 0                  From Local node to Node 0
> 
> The event is "CPU to DRAM Requests to Target Node" (NUMA machine) and
> it's number is 0x1E0. As I understood, I should precede the event with
> the unit mask. So, for example, if I'm interested in unit mask 2, I
> should type:
> 
> perf stat -e r21e0 /bin/ls
> 
> However, this results in a <not supported> message. This happened for
> all events that have a unit mask that I tried. Other events worked
> fine.
> 
> I'm not sure whether I'm giving the right command or this is a problem
> with perf/kernel version. As it turned out, I'm running Ubuntu with
> kernel 3.11.10-03111002, but the latest available perf version from
> the repositories is 3.8.0-35, which is the one I'm using.
> 
> Any help is appreciated.
> 
> Thank you,
> Martin
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