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Date: Tue, 18 Aug 2015 10:36:41 -0700
From: Stephane Eranian <eranian@...gle.com>
To: "Liang, Kan" <kan.liang@...el.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
"mingo@...hat.com" <mingo@...hat.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
"ak@...ux.intel.com" <ak@...ux.intel.com>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RFC 03/10] perf,tools: support option --socket
On Tue, Aug 18, 2015 at 2:25 AM, <kan.liang@...el.com> wrote:
> From: Kan Liang <kan.liang@...el.com>
>
> Introduce a new option for perf report to show the event information in
> the same socket together.
> When this option is set, perf report will force to sort by socket.
>
I would say processor socket, otherwise it is a bit confusing. At
first, I thought
you were talking about network sockets.
> $ perf report --stdio --socket
> # To display the perf.data header info, please use
> --header/--header-only options.
> #
> #
> # Total Lost Samples: 0
> #
> # Samples: 686 of event 'cycles'
> # Event count (approx.): 349215462
> #
> #
> # Socket: 0
> #
Processor Socket:
> # Overhead Command Shared Object Symbol
> # ........ ......... ................
> .................................
> #
> 97.05% test test [.] plusB_c
> 0.98% test test [.] plusA_c
> 0.16% test [kernel.vmlinux] [k] add_mm_counter_fast
> 0.15% swapper [kernel.vmlinux] [k] note_gp_changes
> 0.15% perf [kernel.vmlinux] [k] unmap_single_vma
> 0.06% perf [kernel.vmlinux] [k] run_timer_softirq
> 0.00% swapper [kernel.vmlinux] [k] native_write_msr
> #
> # Socket: 1
> #
> # Overhead Command Shared Object Symbol
> # ........ ......... ................
> .................................
> #
> 0.93% perf [kernel.vmlinux] [k] smp_call_function_single
> 0.19% perf [kernel.vmlinux] [k] page_fault
> 0.19% swapper [kernel.vmlinux] [k] pm_qos_request
> 0.12% rcu_sched [kernel.vmlinux] [k]
> dyntick_save_progress_counter
> 0.00% swapper [kernel.vmlinux] [k] wake_up_process
> 0.00% swapper [kernel.vmlinux] [k] __do_softirq
> 0.00% swapper [kernel.vmlinux] [k] run_timer_softirq
> 0.00% swapper [kernel.vmlinux] [k] native_write_msr
> 0.00% perf [kernel.vmlinux] [k] native_write_msr
>
> Signed-off-by: Kan Liang <kan.liang@...el.com>
> ---
> tools/perf/Documentation/perf-report.txt | 3 +++
> tools/perf/builtin-diff.c | 2 +-
> tools/perf/builtin-report.c | 17 ++++++++++++++++-
> tools/perf/builtin-top.c | 2 +-
> tools/perf/ui/stdio/hist.c | 14 ++++++++++----
> tools/perf/util/cpumap.c | 14 ++++++++++++++
> tools/perf/util/cpumap.h | 2 ++
> tools/perf/util/hist.h | 2 +-
> tools/perf/util/sort.c | 6 ++++++
> tools/perf/util/symbol.h | 1 +
> 10 files changed, 55 insertions(+), 8 deletions(-)
>
> diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
> index ca76b0d..49a42e4 100644
> --- a/tools/perf/Documentation/perf-report.txt
> +++ b/tools/perf/Documentation/perf-report.txt
> @@ -293,6 +293,9 @@ OPTIONS
> --group::
> Show event group information together.
>
> +--socket::
> + Show event information in the same socket together.
> +
> --demangle::
> Demangle symbol names to human readable form. It's enabled by default,
> disable with --no-demangle.
> diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
> index 0b180a8..0dfd91f 100644
> --- a/tools/perf/builtin-diff.c
> +++ b/tools/perf/builtin-diff.c
> @@ -667,7 +667,7 @@ static void hists__process(struct hists *hists)
> hists__precompute(hists);
> hists__output_resort(hists, NULL);
>
> - hists__fprintf(hists, true, 0, 0, 0, stdout);
> + hists__fprintf(hists, true, 0, 0, 0, stdout, -1);
> }
>
> static void data__fprintf(void)
> diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
> index 62b285e..6fdf9f4 100644
> --- a/tools/perf/builtin-report.c
> +++ b/tools/perf/builtin-report.c
> @@ -345,7 +345,17 @@ static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
> continue;
>
> hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
> - hists__fprintf(hists, true, 0, 0, rep->min_percent, stdout);
> +
> + if (symbol_conf.socket) {
> + int i;
> +
> + for (i = 0; i < max_socket_num; i++) {
> + fprintf(stdout, "#\n# Socket: %d\n#\n", i);
> + hists__fprintf(hists, true, 0, 0, rep->min_percent, stdout, i);
> + }
> + } else
> + hists__fprintf(hists, true, 0, 0, rep->min_percent, stdout, -1);
> +
> fprintf(stdout, "\n\n");
> }
>
> @@ -724,6 +734,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
> "Show a column with the sum of periods"),
> OPT_BOOLEAN(0, "group", &symbol_conf.event_group,
> "Show event group information together"),
> + OPT_BOOLEAN(0, "socket", &symbol_conf.socket,
> + "Show event information in the same socket together"),
> OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
> "use branch records for per branch histogram filling",
> parse_branch_mode),
> @@ -909,6 +921,9 @@ repeat:
>
> sort__setup_elide(stdout);
>
> + if (symbol_conf.socket)
> + set_max_socket_num();
> +
> ret = __cmd_report(&report);
> if (ret == K_SWITCH_INPUT_DATA) {
> perf_session__delete(session);
> diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
> index bfe24f1..deffe44 100644
> --- a/tools/perf/builtin-top.c
> +++ b/tools/perf/builtin-top.c
> @@ -295,7 +295,7 @@ static void perf_top__print_sym_table(struct perf_top *top)
> hists__output_recalc_col_len(hists, top->print_entries - printed);
> putchar('\n');
> hists__fprintf(hists, false, top->print_entries - printed, win_width,
> - top->min_percent, stdout);
> + top->min_percent, stdout, -1);
> }
>
> static void prompt_integer(int *target, const char *msg)
> diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
> index dfcbc90..2f512b8 100644
> --- a/tools/perf/ui/stdio/hist.c
> +++ b/tools/perf/ui/stdio/hist.c
> @@ -323,7 +323,8 @@ static int hist_entry__snprintf(struct hist_entry *he, struct perf_hpp *hpp)
> return 0;
>
> perf_hpp__for_each_format(fmt) {
> - if (perf_hpp__should_skip(fmt))
> + if (perf_hpp__should_skip(fmt) ||
> + !strcmp(fmt->name, "SOCKET"))
> continue;
>
> /*
> @@ -371,7 +372,7 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
> }
>
> size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
> - int max_cols, float min_pcnt, FILE *fp)
> + int max_cols, float min_pcnt, FILE *fp, int socket)
> {
> struct perf_hpp_fmt *fmt;
> struct rb_node *nd;
> @@ -402,7 +403,8 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
> fprintf(fp, "# ");
>
> perf_hpp__for_each_format(fmt) {
> - if (perf_hpp__should_skip(fmt))
> + if (perf_hpp__should_skip(fmt) ||
> + !strcmp(fmt->name, "SOCKET"))
> continue;
>
> if (!first)
> @@ -428,7 +430,8 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
> perf_hpp__for_each_format(fmt) {
> unsigned int i;
>
> - if (perf_hpp__should_skip(fmt))
> + if (perf_hpp__should_skip(fmt) ||
> + !strcmp(fmt->name, "SOCKET"))
> continue;
>
> if (!first)
> @@ -465,6 +468,9 @@ print_entries:
> if (h->filtered)
> continue;
>
> + if ((socket >= 0) && (cpu__get_socket(h->cpu) != socket))
> + continue;
> +
> percent = hist_entry__get_percent_limit(h);
> if (percent < min_pcnt)
> continue;
> diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c
> index 7f25e6c..ae03426 100644
> --- a/tools/perf/util/cpumap.c
> +++ b/tools/perf/util/cpumap.c
> @@ -407,6 +407,20 @@ out:
> pr_err("Failed to read max cpus, using default of %d\n", max_cpu_num);
> }
>
> +void set_max_socket_num(void)
> +{
> + int cpu, socket;
> +
> + set_max_cpu_num();
> +
> + max_socket_num = 1;
> + for (cpu = 0; cpu < max_cpu_num; cpu++) {
> + socket = cpu__get_socket(cpu);
> + if (max_socket_num < (socket + 1))
> + max_socket_num = socket + 1;
> + }
> +}
> +
> /* Determine highest possible node in the system for sparse allocation */
> static void set_max_node_num(void)
> {
> diff --git a/tools/perf/util/cpumap.h b/tools/perf/util/cpumap.h
> index effb56e..094edd9 100644
> --- a/tools/perf/util/cpumap.h
> +++ b/tools/perf/util/cpumap.h
> @@ -56,9 +56,11 @@ static inline bool cpu_map__empty(const struct cpu_map *map)
>
> int max_cpu_num;
> int max_node_num;
> +int max_socket_num;
> int *cpunode_map;
>
> int cpu__setup_cpunode_map(void);
> +void set_max_socket_num(void);
>
> static inline int cpu__max_node(void)
> {
> diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
> index af80fb5..b188a62 100644
> --- a/tools/perf/util/hist.h
> +++ b/tools/perf/util/hist.h
> @@ -139,7 +139,7 @@ void events_stats__inc(struct events_stats *stats, u32 type);
> size_t events_stats__fprintf(struct events_stats *stats, FILE *fp);
>
> size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
> - int max_cols, float min_pcnt, FILE *fp);
> + int max_cols, float min_pcnt, FILE *fp, int socket);
> size_t perf_evlist__fprintf_nr_events(struct perf_evlist *evlist, FILE *fp);
>
> void hists__filter_by_dso(struct hists *hists);
> diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
> index 245e254..70f0526 100644
> --- a/tools/perf/util/sort.c
> +++ b/tools/perf/util/sort.c
> @@ -1930,6 +1930,12 @@ int setup_sorting(void)
> return err;
> }
>
> + if (symbol_conf.socket) {
> + err = sort_dimension__add("socket");
> + if (err < 0)
> + return err;
> + }
> +
> reset_dimensions();
>
> /*
> diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
> index a4cde92..7c153c7 100644
> --- a/tools/perf/util/symbol.h
> +++ b/tools/perf/util/symbol.h
> @@ -101,6 +101,7 @@ struct symbol_conf {
> annotate_asm_raw,
> annotate_src,
> event_group,
> + socket,
> demangle,
> demangle_kernel,
> filter_relative,
> --
> 1.8.3.1
>
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