linux-kernel - Re: [PATCH v6 00/12] perf tools: fix perf stat with large socket IDs

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Date:   Wed, 23 Dec 2020 23:17:47 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        James Clark <james.clark@....com>
Cc:     linux-perf-users@...r.kernel.org,
        John Garry <john.garry@...wei.com>,
        linux-kernel@...r.kernel.org, namhyung@...nel.org,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Linuxarm <linuxarm@...wei.com>
Subject: Re: [PATCH v6 00/12] perf tools: fix perf stat with large socket IDs

On Fri, Dec 04, 2020 at 11:48:36AM +0000, John Garry wrote:
> On 03/12/2020 15:39, Jiri Olsa wrote:
> 
> +
> 
> > On Thu, Nov 26, 2020 at 04:13:16PM +0200, James Clark wrote:
> > > Changes since v5:
> > >    * Fix test for cpu_map__get_die() by shifting id before testing.
> > >    * Fix test for cpu_map__get_socket() by not using cpu_map__id_to_socket()
> > >      which is only valid in CPU aggregation mode.
> > > 
> > > James Clark (12):
> > >    perf tools: Improve topology test
> > >    perf tools: Use allocator for perf_cpu_map
> > >    perf tools: Add new struct for cpu aggregation
> > >    perf tools: Replace aggregation ID with a struct
> > >    perf tools: add new map type for aggregation
> > >    perf tools: drop in cpu_aggr_map struct
> > >    perf tools: Start using cpu_aggr_id in map
> > >    perf tools: Add separate node member
> > >    perf tools: Add separate socket member
> > >    perf tools: Add separate die member
> > >    perf tools: Add separate core member
> > >    perf tools: Add separate thread member
> > 
> > Acked-by: Jiri Olsa <jolsa@...hat.com>
> > 
> 
> Tested-by: John Garry <john.garry@...wei.com>

hi,
I was wondering where this went, and noticed that
Arnaldo was not CC-ed on the cover letter ;-)

jirka

> 
> I still think that vendors (like us) need to fix/improve their firmware
> tables so that we don't get silly big numbers for socket/package IDs, like
> S5418-D0, below:
> 
> $./perf stat -a --per-die
> 
>  Performance counter stats for 'system wide':
> 
> S36-D0   48   72,216.31 msec cpu-clock      #   47.933 CPUs utilized
> S36-D0   48        174     context-switches #   0.002 K/sec
> S36-D0   48         48     cpu-migrations   #   0.001 K/sec
> S36-D0   48         0     page-faults    #   0.000 K/sec
> S36-D0   48   7,991,698     cycles    #   0.000 GHz
> S36-D0   48   4,750,040     instructions   #   0.59  insn per cycle
> S36-D0    1   <not supported>     branches
> S36-D0   48      32,928     branch-misses    #   0.00% of all branches
> S5418-D0   48   72,189.54 msec cpu-clock     #   47.915 CPUs utilized
> S5418-D0   48        176     context-switches  #   0.002 K/sec
> S5418-D0   48         48     cpu-migrations   #   0.001 K/sec
> S5418-D0   48         0     page-faults     #   0.000 K/sec
> S5418-D0   48   5,677,218     cycles    #    0.000 GHz
> S5418-D0   48   3,872,285     instructions   #  0.68  insn per cycle
> S5418-D0    1   <not supported>     branches
> S5418-D0   48      29,208     branch-misses   #  0.00% of all branches
> 
>       1.506615297 seconds time elapsed
> 
> but at least it works now. Thanks.
> 
> > 
> > > 
> > >   tools/perf/builtin-stat.c      | 128 ++++++++++++------------
> > >   tools/perf/tests/topology.c    |  64 ++++++++++--
> > >   tools/perf/util/cpumap.c       | 171 ++++++++++++++++++++++-----------
> > >   tools/perf/util/cpumap.h       |  55 ++++++-----
> > >   tools/perf/util/stat-display.c | 102 ++++++++++++--------
> > >   tools/perf/util/stat.c         |   2 +-
> > >   tools/perf/util/stat.h         |   9 +-
> > >   7 files changed, 337 insertions(+), 194 deletions(-)
> > > 
> > > -- 
> > > 2.28.0
> > > 
> > 
> > .
> > 
>