Re: [PATCH v2 14/16] perf tools: add new mem command for memory access profiling

[Arnaldo Carvalho de Melo <acme@redhat.com>]

Em Tue, Nov 06, 2012 at 04:49:26PM +0100, Stephane Eranian escreveu:
> On Tue, Nov 6, 2012 at 4:44 PM, Arnaldo Carvalho de Melo
> <acme@redhat.com> wrote:
> > Em Mon, Nov 05, 2012 at 02:51:01PM +0100, Stephane Eranian escreveu:
> >> +
> >> +     if (strcmp(mem_operation, MEM_OPERATION_LOAD))
> >> +             sprintf(event, "cpu/mem-stores/pp");
> >> +     else
> >> +             sprintf(event, "cpu/mem-loads/pp");

> > Fails for me on a Sandy Bridge notebook:

> That's because you need to update the microcode.

> $ sudo modprobe microcode
> $ cat /proc/cpuinfo
> 
> Line with microcode needs to say:
> microcode : 0x28

Here it says:

microcode	: 0x25
 
> update the microcode package or install directly from
> intel download center.

Thanks for the info, will do. And they will add "microcode hints for
selected processors should give that info to the user" to my TODO list
:-)

- Arnaldo