Messages in this thread | | | Date | Tue, 6 Nov 2012 13:51:19 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH v2 14/16] perf tools: add new mem command for memory access profiling |
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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
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