* [PATCH V2 RESEND] perf stat: Fix the ratio comments of miss-events
@ 2020-09-16 10:48 Qi Liu
2020-09-16 13:54 ` Arnaldo Carvalho de Melo
0 siblings, 1 reply; 2+ messages in thread
From: Qi Liu @ 2020-09-16 10:48 UTC (permalink / raw)
To: acme, ak, mingo; +Cc: linux-kernel, linuxarm
Perf stat displays miss ratio of L1-dcache, L1-icache, dTLB cache,
iTLB cache and LL-cache. Take L1-dcache for example, miss ratio is
caculated as "L1-dcache-load-misses/L1-dcache-loads". So
"of all L1-dcache hits" is unsuitable to describe it, and
"of all L1-dcache accesses" seems better.
The comments of L1-icache, dTLB cache, iTLB cache and LL-cache are
fixed in the same way.
Signed-off-by: Qi Liu <liuqi115@huawei.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
---
tools/perf/util/stat-shadow.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
index e1ba6c1..ee3c404 100644
--- a/tools/perf/util/stat-shadow.c
+++ b/tools/perf/util/stat-shadow.c
@@ -517,7 +517,7 @@ static void print_l1_dcache_misses(struct perf_stat_config *config,
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
- out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-dcache hits", ratio);
+ out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-dcache accesses", ratio);
}
static void print_l1_icache_misses(struct perf_stat_config *config,
@@ -538,7 +538,7 @@ static void print_l1_icache_misses(struct perf_stat_config *config,
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
- out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-icache hits", ratio);
+ out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-icache accesses", ratio);
}
static void print_dtlb_cache_misses(struct perf_stat_config *config,
@@ -558,7 +558,7 @@ static void print_dtlb_cache_misses(struct perf_stat_config *config,
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
- out->print_metric(config, out->ctx, color, "%7.2f%%", "of all dTLB cache hits", ratio);
+ out->print_metric(config, out->ctx, color, "%7.2f%%", "of all dTLB cache accesses", ratio);
}
static void print_itlb_cache_misses(struct perf_stat_config *config,
@@ -578,7 +578,7 @@ static void print_itlb_cache_misses(struct perf_stat_config *config,
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
- out->print_metric(config, out->ctx, color, "%7.2f%%", "of all iTLB cache hits", ratio);
+ out->print_metric(config, out->ctx, color, "%7.2f%%", "of all iTLB cache accesses", ratio);
}
static void print_ll_cache_misses(struct perf_stat_config *config,
@@ -598,7 +598,7 @@ static void print_ll_cache_misses(struct perf_stat_config *config,
ratio = avg / total * 100.0;
color = get_ratio_color(GRC_CACHE_MISSES, ratio);
- out->print_metric(config, out->ctx, color, "%7.2f%%", "of all LL-cache hits", ratio);
+ out->print_metric(config, out->ctx, color, "%7.2f%%", "of all LL-cache accesses", ratio);
}
/*
@@ -918,7 +918,7 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config,
if (runtime_stat_n(st, STAT_L1_DCACHE, ctx, cpu) != 0)
print_l1_dcache_misses(config, cpu, evsel, avg, out, st);
else
- print_metric(config, ctxp, NULL, NULL, "of all L1-dcache hits", 0);
+ print_metric(config, ctxp, NULL, NULL, "of all L1-dcache accesses", 0);
} else if (
evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_L1I |
@@ -928,7 +928,7 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config,
if (runtime_stat_n(st, STAT_L1_ICACHE, ctx, cpu) != 0)
print_l1_icache_misses(config, cpu, evsel, avg, out, st);
else
- print_metric(config, ctxp, NULL, NULL, "of all L1-icache hits", 0);
+ print_metric(config, ctxp, NULL, NULL, "of all L1-icache accesses", 0);
} else if (
evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
@@ -938,7 +938,7 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config,
if (runtime_stat_n(st, STAT_DTLB_CACHE, ctx, cpu) != 0)
print_dtlb_cache_misses(config, cpu, evsel, avg, out, st);
else
- print_metric(config, ctxp, NULL, NULL, "of all dTLB cache hits", 0);
+ print_metric(config, ctxp, NULL, NULL, "of all dTLB cache accesses", 0);
} else if (
evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
@@ -948,7 +948,7 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config,
if (runtime_stat_n(st, STAT_ITLB_CACHE, ctx, cpu) != 0)
print_itlb_cache_misses(config, cpu, evsel, avg, out, st);
else
- print_metric(config, ctxp, NULL, NULL, "of all iTLB cache hits", 0);
+ print_metric(config, ctxp, NULL, NULL, "of all iTLB cache accesses", 0);
} else if (
evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_LL |
@@ -958,7 +958,7 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config,
if (runtime_stat_n(st, STAT_LL_CACHE, ctx, cpu) != 0)
print_ll_cache_misses(config, cpu, evsel, avg, out, st);
else
- print_metric(config, ctxp, NULL, NULL, "of all LL-cache hits", 0);
+ print_metric(config, ctxp, NULL, NULL, "of all LL-cache accesses", 0);
} else if (evsel__match(evsel, HARDWARE, HW_CACHE_MISSES)) {
total = runtime_stat_avg(st, STAT_CACHEREFS, ctx, cpu);
--
2.8.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH V2 RESEND] perf stat: Fix the ratio comments of miss-events
2020-09-16 10:48 [PATCH V2 RESEND] perf stat: Fix the ratio comments of miss-events Qi Liu
@ 2020-09-16 13:54 ` Arnaldo Carvalho de Melo
0 siblings, 0 replies; 2+ messages in thread
From: Arnaldo Carvalho de Melo @ 2020-09-16 13:54 UTC (permalink / raw)
To: Qi Liu; +Cc: ak, mingo, linux-kernel, linuxarm
Em Wed, Sep 16, 2020 at 06:48:51PM +0800, Qi Liu escreveu:
> Perf stat displays miss ratio of L1-dcache, L1-icache, dTLB cache,
> iTLB cache and LL-cache. Take L1-dcache for example, miss ratio is
> caculated as "L1-dcache-load-misses/L1-dcache-loads". So
> "of all L1-dcache hits" is unsuitable to describe it, and
> "of all L1-dcache accesses" seems better.
>
> The comments of L1-icache, dTLB cache, iTLB cache and LL-cache are
> fixed in the same way.
>
> Signed-off-by: Qi Liu <liuqi115@huawei.com>
> Reviewed-by: Andi Kleen <ak@linux.intel.com>
Thanks, applied.
- Arnaldo
> ---
> tools/perf/util/stat-shadow.c | 20 ++++++++++----------
> 1 file changed, 10 insertions(+), 10 deletions(-)
>
> diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
> index e1ba6c1..ee3c404 100644
> --- a/tools/perf/util/stat-shadow.c
> +++ b/tools/perf/util/stat-shadow.c
> @@ -517,7 +517,7 @@ static void print_l1_dcache_misses(struct perf_stat_config *config,
>
> color = get_ratio_color(GRC_CACHE_MISSES, ratio);
>
> - out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-dcache hits", ratio);
> + out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-dcache accesses", ratio);
> }
>
> static void print_l1_icache_misses(struct perf_stat_config *config,
> @@ -538,7 +538,7 @@ static void print_l1_icache_misses(struct perf_stat_config *config,
> ratio = avg / total * 100.0;
>
> color = get_ratio_color(GRC_CACHE_MISSES, ratio);
> - out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-icache hits", ratio);
> + out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-icache accesses", ratio);
> }
>
> static void print_dtlb_cache_misses(struct perf_stat_config *config,
> @@ -558,7 +558,7 @@ static void print_dtlb_cache_misses(struct perf_stat_config *config,
> ratio = avg / total * 100.0;
>
> color = get_ratio_color(GRC_CACHE_MISSES, ratio);
> - out->print_metric(config, out->ctx, color, "%7.2f%%", "of all dTLB cache hits", ratio);
> + out->print_metric(config, out->ctx, color, "%7.2f%%", "of all dTLB cache accesses", ratio);
> }
>
> static void print_itlb_cache_misses(struct perf_stat_config *config,
> @@ -578,7 +578,7 @@ static void print_itlb_cache_misses(struct perf_stat_config *config,
> ratio = avg / total * 100.0;
>
> color = get_ratio_color(GRC_CACHE_MISSES, ratio);
> - out->print_metric(config, out->ctx, color, "%7.2f%%", "of all iTLB cache hits", ratio);
> + out->print_metric(config, out->ctx, color, "%7.2f%%", "of all iTLB cache accesses", ratio);
> }
>
> static void print_ll_cache_misses(struct perf_stat_config *config,
> @@ -598,7 +598,7 @@ static void print_ll_cache_misses(struct perf_stat_config *config,
> ratio = avg / total * 100.0;
>
> color = get_ratio_color(GRC_CACHE_MISSES, ratio);
> - out->print_metric(config, out->ctx, color, "%7.2f%%", "of all LL-cache hits", ratio);
> + out->print_metric(config, out->ctx, color, "%7.2f%%", "of all LL-cache accesses", ratio);
> }
>
> /*
> @@ -918,7 +918,7 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config,
> if (runtime_stat_n(st, STAT_L1_DCACHE, ctx, cpu) != 0)
> print_l1_dcache_misses(config, cpu, evsel, avg, out, st);
> else
> - print_metric(config, ctxp, NULL, NULL, "of all L1-dcache hits", 0);
> + print_metric(config, ctxp, NULL, NULL, "of all L1-dcache accesses", 0);
> } else if (
> evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
> evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_L1I |
> @@ -928,7 +928,7 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config,
> if (runtime_stat_n(st, STAT_L1_ICACHE, ctx, cpu) != 0)
> print_l1_icache_misses(config, cpu, evsel, avg, out, st);
> else
> - print_metric(config, ctxp, NULL, NULL, "of all L1-icache hits", 0);
> + print_metric(config, ctxp, NULL, NULL, "of all L1-icache accesses", 0);
> } else if (
> evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
> evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
> @@ -938,7 +938,7 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config,
> if (runtime_stat_n(st, STAT_DTLB_CACHE, ctx, cpu) != 0)
> print_dtlb_cache_misses(config, cpu, evsel, avg, out, st);
> else
> - print_metric(config, ctxp, NULL, NULL, "of all dTLB cache hits", 0);
> + print_metric(config, ctxp, NULL, NULL, "of all dTLB cache accesses", 0);
> } else if (
> evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
> evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
> @@ -948,7 +948,7 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config,
> if (runtime_stat_n(st, STAT_ITLB_CACHE, ctx, cpu) != 0)
> print_itlb_cache_misses(config, cpu, evsel, avg, out, st);
> else
> - print_metric(config, ctxp, NULL, NULL, "of all iTLB cache hits", 0);
> + print_metric(config, ctxp, NULL, NULL, "of all iTLB cache accesses", 0);
> } else if (
> evsel->core.attr.type == PERF_TYPE_HW_CACHE &&
> evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_LL |
> @@ -958,7 +958,7 @@ void perf_stat__print_shadow_stats(struct perf_stat_config *config,
> if (runtime_stat_n(st, STAT_LL_CACHE, ctx, cpu) != 0)
> print_ll_cache_misses(config, cpu, evsel, avg, out, st);
> else
> - print_metric(config, ctxp, NULL, NULL, "of all LL-cache hits", 0);
> + print_metric(config, ctxp, NULL, NULL, "of all LL-cache accesses", 0);
> } else if (evsel__match(evsel, HARDWARE, HW_CACHE_MISSES)) {
> total = runtime_stat_avg(st, STAT_CACHEREFS, ctx, cpu);
>
> --
> 2.8.1
>
--
- Arnaldo
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2020-09-16 18:47 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-09-16 10:48 [PATCH V2 RESEND] perf stat: Fix the ratio comments of miss-events Qi Liu
2020-09-16 13:54 ` Arnaldo Carvalho de Melo
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.