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SubjectRe: [PATCH v3 06/11] perf, tools, stat: Support JSON metrics in perf stat
On Tue, Sep 05, 2017 at 03:09:19PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Mon, Sep 04, 2017 at 10:37:25AM -0700, Andi Kleen escreveu:
> > On Mon, Sep 04, 2017 at 02:11:28PM -0300, Arnaldo Carvalho de Melo wrote:
> > > Em Thu, Aug 31, 2017 at 12:40:31PM -0700, Andi Kleen escreveu:
> > > > The actual JSON metrics are in a separate pull request.
> > >
> > > Yeah, I noticed when trying to test it :-\
> > >
> > > Was this pull req submitted?
> >
> > Not yet. I was waiting to finish review.
> >
> > It makes perf crash until you apply the metricgroup patchkit first.
> >
> > But you can get it here
> >
> > git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc.git perf/intel-json-metrics-2
>
> Ok, so I tried installing the Broadwell ones (one of my test machines)
> and got into:

I would suggest to apply all the patches from the patchkit before you test.
Some of the later ones add/fix stuff needed by some of the metrics.

>
> [root@jouet ~]# perf stat -M Pipeline flops
> bpf: builtin compilation failed: -95, try external compiler
> ERROR: problems with path cpu/uops_executed.c: No such file or directory
> Cannot set up events {uops_retired.retire_slots,inst_retired.any}:W,{inst_retired.any,cycles}:W,{uops_executed.thread,cpu/uops_executed.core,cmask=1/,uops_executed.cycles_ge_1_uop_exec}:W
>
> Usage: perf stat [<options>] [<command>]
>
> -M, --metrics <metric/metric group list>
> monitor specified metrics or metric groups (separated by ,)
> [root@jouet ~]# perf stat -M Pipeline flops
>
>
> Wasn't this already fixed?

Yes that was supposed to be fixed with

commit 77d0871c76bad1093a3d86870fe76dd1ad0ca397
Author: Andi Kleen <ak@linux.intel.com>
Date: Fri Aug 11 16:26:19 2017 -0700

perf bpf: Tighten detection of BPF events

perf stat -e cpu/uops_executed.core,cmask=1/


I'll check.

-Andi

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