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| author | Jin Yao <yao.jin@linux.intel.com> | 2019-08-28 08:59:31 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-09-01 04:27:52 +0300 |
| commit | 287f2649f791819dd2d8f32f0213c8c521d6dfa0 (patch) | |
| tree | 67c19415dd0a70c6f6512a5bd9ab1c67d408a1c4 /tools/perf/util/metricgroup.h | |
| parent | a55ab7c4ca6986a542d313b02043a39ebf712a39 (diff) | |
| download | linux-287f2649f791819dd2d8f32f0213c8c521d6dfa0.tar.xz | |
perf metricgroup: Scale the metric result
Some metrics define the scale unit, such as
{
"BriefDescription": "Intel Optane DC persistent memory read latency (ns). Derived from unc_m_pmm_rpq_occupancy.all",
"Counter": "0,1,2,3",
"EventCode": "0xE0",
"EventName": "UNC_M_PMM_READ_LATENCY",
"MetricExpr": "UNC_M_PMM_RPQ_OCCUPANCY.ALL / UNC_M_PMM_RPQ_INSERTS / UNC_M_CLOCKTICKS",
"MetricName": "UNC_M_PMM_READ_LATENCY",
"PerPkg": "1",
"ScaleUnit": "6000000000ns",
"UMask": "0x1",
"Unit": "iMC"
},
For above example, the ratio should be,
ratio = (UNC_M_PMM_RPQ_OCCUPANCY.ALL / UNC_M_PMM_RPQ_INSERTS / UNC_M_CLOCKTICKS) * 6000000000
But in current code, the ratio is not scaled ( * 6000000000)
With this patch, the ratio is scaled and the unit (ns) is printed.
For example,
# 219.4 ns UNC_M_PMM_READ_LATENCY
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20190828055932.8269-4-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/metricgroup.h')
| -rw-r--r-- | tools/perf/util/metricgroup.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/util/metricgroup.h b/tools/perf/util/metricgroup.h index e5092f6404ae..475c7f912864 100644 --- a/tools/perf/util/metricgroup.h +++ b/tools/perf/util/metricgroup.h @@ -20,6 +20,7 @@ struct metric_expr { struct list_head nd; const char *metric_expr; const char *metric_name; + const char *metric_unit; struct evsel **metric_events; }; |