From: Kan Liang
Show frequency, CPU Utilization and percent performance for each symbol
in perf report by --freq-perf
In sampling group, only group leader do sampling. So only need to print
group leader's freq in --group.
--freq-perf option also implies --group.
Here is an example.
$ perf report --stdio --freq-perf
Overhead FREQ MHz CPU% CORE_BUSY%
Command Shared Object Symbol
. . ..
... ..
99.54% 99.54% 99.53% 99.53% 99.53% 2301 96 99
tchain_edit tchain_edit [.] f3
0.20% 0.20% 0.20% 0.20% 0.20% 2301 98 99
tchain_edit tchain_edit [.] f2
0.05% 0.05% 0.05% 0.05% 0.05% 2300 98 99
tchain_edit [kernel.vmlinux] [k] read_tsc
Signed-off-by: Kan Liang
---
tools/perf/Documentation/perf-report.txt | 12 ++
tools/perf/builtin-report.c | 25 ++-
tools/perf/ui/hist.c | 71 +---
tools/perf/util/hist.h | 3 ++
tools/perf/util/session.c| 33 ---
tools/perf/util/sort.c | 3 ++
tools/perf/util/symbol.h | 12 +-
7 files changed, 137 insertions(+), 22 deletions(-)
diff --git a/tools/perf/Documentation/perf-report.txt
b/tools/perf/Documentation/perf-report.txt
index b941d5e..9804e63 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -307,6 +307,18 @@ OPTIONS
special event -e cpu/mem-loads/ or -e cpu/mem-stores/. See
'perf mem' for simpler access.
+--freq-perf::
+ Show CPU frequency and performance result from sample read.
+ To generate the frequency and performance output, the perf.data file
+ must have been obtained by group read and using special events cycles,
+ ref-cycles, msr/tsc/, msr/aperf/ or msr/mperf/
+ Freq MHz: The frequency during the sample interval. Needs cycles and
+ ref-cycles event.
+ CPU%: CPU utilization during the sample interval. Needs ref-cycles and
+ msr/tsc/ events.
+ CORE_BUSY%: actual percent performance (APERF/MPERF%) during the
+ sample interval. Needs msr/aperf/ and msr/mperf/ events.
+
--percent-limit::
Do not show entries which have an overhead under that percent.
(Default: 0).
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index d6e5203..bd466d8 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -134,7 +134,8 @@ static int hist_iter__report_callback(struct
hist_entry_iter *iter,
struct branch_info *bi;
if ((iter->ops == &hist_iter_normal) &&
- perf_evsel__is_group_leader(evsel))
+ perf_evsel__is_group_leader(evsel) &&
+ symbol_conf.freq_perf)
set_he_freq_perf(rep->session, iter);
if (!ui__has_annotation())
@@ -785,6 +786,8 @@ int cmd_report(int argc, const char **argv, const char
*prefix __maybe_unused)
OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
"Enable kernel symbol demangling"),
OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
+ OPT_BOOLEAN(0, "freq-perf", &symbol_conf.freq_perf,
+ "show CPU freqency and performance info"),
OPT_CALLBACK(0, "percent-limit", &report, "percent",
"Don't show entries under that percent",
parse_percent_limit),
OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
@@ -803,7 +806,9 @@ int cmd_report(int argc, const char **argv, const char
*prefix __maybe_unused)
struct perf_data_file file = {
.mode = PERF_DATA_MODE_READ,
};
+ struct perf_evsel *pos;
int ret = hists__init();
+ perf_freq_t freq_data_status = { 0 };
if (ret < 0)
return ret;
@@ -888,6 +893,24 @@ repeat:
symbol_conf.cumulate_callchain = false;
}
+
+ if (symbol_conf.freq_perf) {
+ symbol_conf.freq_perf_type = 0;
+ evlist__for_each(session->evlist, pos) {
+ perf_freq__init(session->header.env.msr_pmu_type,
+ pos, freq_data_status, 1);
+ }
+ if (perf_freq__has_freq(freq_data_status))
+ symbol_conf.freq_perf_type |= 1U << DISPLAY_FREQ;
+ if (perf_freq__has_cpu_util(freq_data_status))
+ symbol_conf.freq_perf_type |= 1U << DISPLAY_CPU_UTIL;
+ if (perf_freq__has_core_busy(freq_data_status))
+ symbol_conf.freq_perf_type |= 1U << DISPLAY_CORE_BUSY;
+
+ /* --freq-perf option imply --group */
+ symbol_conf.event
