Re: [PATCH 5/5 v2] perf timechart: add emphasize option
From: Stanislav Fomichev
Date: Tue Dec 17 2013 - 07:15:40 EST
> Please give a sample usage command line and a sample output. (the
> highlighting can be done using ASCII escape sequences in the changelog
> as well.)
Highlighting is done in the generated SVG, so I can't really show it in
the log or documentation. But I added simple example with -e option.
> -e::
> --emphasize=<duration_nsecs|task_name>::
Thanks, added.
> It's also not made clear that the option can take a numeric input, and
> if the input is numeric, it is interpreted as a task name.
>
> So please make features more approachable!
Added more info to the documentation.
Attached new patch below.
---
This option highlights tasks (using different color) that run more than given
duration or tasks with given name.
Signed-off-by: Stanislav Fomichev <stfomichev@xxxxxxxxxxxxxx>
---
tools/perf/Documentation/perf-timechart.txt | 14 ++++++++++++++
tools/perf/builtin-timechart.c | 21 ++++++++++++++++++++-
tools/perf/util/svghelper.c | 23 ++++++++++++++++++++---
tools/perf/util/svghelper.h | 4 +++-
4 files changed, 57 insertions(+), 5 deletions(-)
diff --git a/tools/perf/Documentation/perf-timechart.txt b/tools/perf/Documentation/perf-timechart.txt
index 367c1be0551c..b81e91dd16ce 100644
--- a/tools/perf/Documentation/perf-timechart.txt
+++ b/tools/perf/Documentation/perf-timechart.txt
@@ -56,12 +56,26 @@ $ perf timechart
Written 10.2 seconds of trace to output.svg.
+Record system-wide timechart:
+
+ $ perf timechart record
+
+ then generate timechart and highlight 'gcc' tasks:
+
+ $ perf timechart -e gcc
+
-n::
--proc-num::
Print task info for at least given number of tasks.
-t::
--topology::
Sort CPUs according to topology.
+-e::
+--emphasize=<duration_nsecs|task_name>::
+ Highlight tasks (using different color) that run more than given
+ duration or tasks with given name. If number is given it's interpreted
+ as number of nanoseconds. If non-numeric string is given it's
+ interpreted as task name.
RECORD OPTIONS
--------------
diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index 8bde57c5c908..c0dcb05909b2 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -841,7 +841,6 @@ static void draw_cpu_usage(struct timechart *tchart)
sample->start_time,
sample->end_time,
p->pid,
- "sample",
c->comm,
sample->backtrace);
}
@@ -1252,6 +1251,23 @@ parse_process(const struct option *opt __maybe_unused, const char *arg,
return 0;
}
+static int
+parse_emphasize(const struct option *opt __maybe_unused, const char *arg,
+ int __maybe_unused unset)
+{
+ unsigned long duration = strtoul(arg, NULL, 0);
+
+ if (svg_emphasize || svg_emphasize_name)
+ return -1;
+
+ if (duration)
+ svg_emphasize = duration;
+ else
+ svg_emphasize_name = strdup(arg);
+
+ return 0;
+}
+
int cmd_timechart(int argc, const char **argv,
const char *prefix __maybe_unused)
{
@@ -1270,6 +1286,9 @@ int cmd_timechart(int argc, const char **argv,
OPT_STRING('i', "input", &input_name, "file", "input file name"),
OPT_STRING('o', "output", &output_name, "file", "output file name"),
OPT_INTEGER('w', "width", &svg_page_width, "page width"),
+ OPT_CALLBACK('e', "emphasize", NULL, "duration or name",
+ "emphasize tasks. Pass duration in ns or process name.",
+ parse_emphasize),
OPT_BOOLEAN('P', "power-only", &tchart.power_only, "output power data only"),
OPT_BOOLEAN('T', "tasks-only", &tchart.tasks_only,
"output processes data only"),
diff --git a/tools/perf/util/svghelper.c b/tools/perf/util/svghelper.c
index 9468136735ca..f056a7450e5f 100644
--- a/tools/perf/util/svghelper.c
+++ b/tools/perf/util/svghelper.c
@@ -31,6 +31,8 @@ static u64 turbo_frequency, max_freq;
#define SLOT_HEIGHT 25.0
int svg_page_width = 1000;
+u64 svg_emphasize;
+const char *svg_emphasize_name;
#define MIN_TEXT_SIZE 0.01
@@ -112,6 +114,7 @@ void open_svg(const char *filename, int cpus, int rows, u64 start, u64 end)
fprintf(svgfile, " rect.process { fill:rgb(180,180,180); fill-opacity:0.9; stroke-width:1; stroke:rgb( 0, 0, 0); } \n");
fprintf(svgfile, " rect.process2 { fill:rgb(180,180,180); fill-opacity:0.9; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
fprintf(svgfile, " rect.sample { fill:rgb( 0, 0,255); fill-opacity:0.8; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
+ fprintf(svgfile, " rect.sample_em{ fill:rgb(255,128, 0); fill-opacity:0.8; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
fprintf(svgfile, " rect.blocked { fill:rgb(255, 0, 0); fill-opacity:0.5; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
fprintf(svgfile, " rect.waiting { fill:rgb(224,214, 0); fill-opacity:0.8; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
fprintf(svgfile, " rect.WAITING { fill:rgb(255,214, 48); fill-opacity:0.6; stroke-width:0; stroke:rgb( 0, 0, 0); } \n");
@@ -155,17 +158,24 @@ void svg_blocked(int Yslot, int cpu, u64 start, u64 end, const char *backtrace)
void svg_running(int Yslot, int cpu, u64 start, u64 end, const char *backtrace)
{
double text_size;
+ const char *type;
+
if (!svgfile)
return;
+ if (svg_emphasize && end - start > svg_emphasize)
+ type = "sample_em";
+ else
+ type = "sample";
fprintf(svgfile, "<g>\n");
fprintf(svgfile, "<title>#%d running %s</title>\n",
cpu, time_to_string(end - start));
if (backtrace)
fprintf(svgfile, "<desc>Switched because:\n%s</desc>\n", backtrace);
- fprintf(svgfile, "<rect x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\" class=\"sample\"/>\n",
- time2pixels(start), time2pixels(end)-time2pixels(start), Yslot * SLOT_MULT, SLOT_HEIGHT);
+ fprintf(svgfile, "<rect x=\"%4.8f\" width=\"%4.8f\" y=\"%4.1f\" height=\"%4.1f\" class=\"%s\"/>\n",
+ time2pixels(start), time2pixels(end)-time2pixels(start), Yslot * SLOT_MULT, SLOT_HEIGHT,
+ type);
text_size = (time2pixels(end)-time2pixels(start));
if (cpu > 9)
@@ -293,13 +303,20 @@ void svg_cpu_box(int cpu, u64 __max_freq, u64 __turbo_freq)
fprintf(svgfile, "</g>\n");
}
-void svg_process(int cpu, u64 start, u64 end, int pid, const char *type, const char *name, const char *backtrace)
+void svg_process(int cpu, u64 start, u64 end, int pid, const char *name, const char *backtrace)
{
double width;
+ const char *type;
if (!svgfile)
return;
+ if (svg_emphasize && end - start >= svg_emphasize)
+ type = "sample_em";
+ else if (svg_emphasize_name && strstr(name, svg_emphasize_name))
+ type = "sample_em";
+ else
+ type = "sample";
fprintf(svgfile, "<g transform=\"translate(%4.8f,%4.8f)\">\n", time2pixels(start), cpu2y(cpu));
fprintf(svgfile, "<title>%d %s running %s</title>\n", pid, name, time_to_string(end - start));
diff --git a/tools/perf/util/svghelper.h b/tools/perf/util/svghelper.h
index 1df4fb6c3a4a..10b4187bff6a 100644
--- a/tools/perf/util/svghelper.h
+++ b/tools/perf/util/svghelper.h
@@ -11,7 +11,7 @@ extern void svg_waiting(int Yslot, int cpu, u64 start, u64 end, const char *back
extern void svg_cpu_box(int cpu, u64 max_frequency, u64 turbo_frequency);
-extern void svg_process(int cpu, u64 start, u64 end, int pid, const char *type, const char *name, const char *backtrace);
+extern void svg_process(int cpu, u64 start, u64 end, int pid, const char *name, const char *backtrace);
extern void svg_cstate(int cpu, u64 start, u64 end, int type);
extern void svg_pstate(int cpu, u64 start, u64 end, u64 freq);
@@ -27,5 +27,7 @@ extern int svg_build_topology_map(char *sib_core, int sib_core_nr,
char *sib_thr, int sib_thr_nr);
extern int svg_page_width;
+extern u64 svg_emphasize;
+extern const char *svg_emphasize_name;
#endif /* __PERF_SVGHELPER_H */
--
1.8.3.2
--
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