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Message-ID: <20131217133821.GA6517@ghostprotocols.net>
Date: Tue, 17 Dec 2013 10:38:21 -0300
From: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To: Stanislav Fomichev <stfomichev@...dex-team.ru>
Cc: Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
a.p.zijlstra@...llo.nl, paulus@...ba.org, mingo@...hat.com,
namhyung@...nel.org, artagnon@...il.com, jolsa@...hat.com
Subject: Re: [PATCH 5/5 v2] perf timechart: add emphasize option
Em Tue, Dec 17, 2013 at 04:15:22PM +0400, Stanislav Fomichev escreveu:
> > 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.
I also wonder how to allocate single letter options here... can we live
with just --emphasize for now? Wouldn't at some point we maybe want to
use -e in 'perf timechart' to pick some specific event, and then, to
make it consistent with the other tools, -e would then be used?
- Arnaldo
> > 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@...dex-team.ru>
> ---
> 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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