linux-kernel - Re: [PATCH 2/6] tools/perf/json: Add cache metrics for s390 z16

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Date:   Mon, 13 Mar 2023 15:33:04 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ian Rogers <irogers@...gle.com>
Cc:     Thomas Richter <tmricht@...ux.ibm.com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        sumanthk@...ux.ibm.com, svens@...ux.ibm.com, gor@...ux.ibm.com,
        hca@...ux.ibm.com
Subject: Re: [PATCH 2/6] tools/perf/json: Add cache metrics for s390 z16

Em Mon, Mar 13, 2023 at 08:22:44AM -0700, Ian Rogers escreveu:
> On Mon, Mar 13, 2023 at 1:30 AM Thomas Richter <tmricht@...ux.ibm.com> wrote:
> >
> > Add metrics for s390 z16
> > - Percentage sourced from Level 2 cache
> > - Percentage sourced from Level 3 on same chip cache
> > - Percentage sourced from Level 4 Local cache on same book
> > - Percentage sourced from Level 4 Remote cache on different book
> > - Percentage sourced from memory
> >
> > For details about the formulas see this documentation:
> > https://www.ibm.com/support/pages/system/files/inline-files/CPU%20MF%20Formulas%20including%20z16%20-%20May%202022_1.pdf
> >
> > Outpuf after:
> >  # ./perf stat -M l4rp -- dd if=/dev/zero of=/dev/null bs=10M count=10K
> >  .... dd output deleted
> >
> >  Performance counter stats for 'dd if=/dev/zero of=/dev/null bs=10M count=10K':
> >
> >                  0      IDCW_OFF_DRAWER_CHIP_HIT         #     0.00 l4rp
> >            431,866      L1I_DIR_WRITES
> >              2,395      IDCW_OFF_DRAWER_IV
> >                  0      ICW_OFF_DRAWER
> >                  0      IDCW_OFF_DRAWER_DRAWER_HIT
> >              1,437      DCW_OFF_DRAWER
> >        425,960,793      L1D_DIR_WRITES
> >
> >       12.165030699 seconds time elapsed
> >
> >        0.001037000 seconds user
> >       12.162140000 seconds sys
> >
> >  #
> >
> > Signed-off-by: Thomas Richter <tmricht@...ux.ibm.com>
> > Acked-By: Sumanth Korikkar <sumanthk@...ux.ibm.com>
> 
> Acked-by: Ian Rogers <irogers@...gle.com>

Thanks, applied the first two patches, please address the review
suggestions for patches 3-6 and resubmit only those.

The patches will be in the public perf-tools-next branch later today.

- Arnaldo