[PATCH 38/52] perf c2c report: Add global stats stdio output

Arnaldo Carvalho de Melo
2016-10-20T15:08:47Z

Display global stats table as part of the stdio output
or when --stats option is speicified:

$ perf c2c report --stats
=================================================
Trace Event Information
=================================================
Total records : 41237
Locked Load/Store Operations : 4075
Load Operations : 20526
Loads - uncacheable : 0
Loads - IO : 0
Loads - Miss : 552
Loads - no mapping : 31
Load Fill Buffer Hit : 7333
Load L1D hit : 6398
Load L2D hit : 144
Load LLC hit : 4889
Load Local HITM : 1185
Load Remote HITM : 838
Load Remote HIT : 52
Load Local DRAM : 183
Load Remote DRAM : 106
Load MESI State Exclusive : 289
Load MESI State Shared : 0
Load LLC Misses : 1179
LLC Misses to Local DRAM : 15.5%
LLC Misses to Remote DRAM : 9.0%
LLC Misses to Remote cache (HIT) : 4.4%
LLC Misses to Remote cache (HITM) : 71.1%
Store Operations : 20711
Store - uncacheable : 0
Store - no mapping : 1
Store L1D Hit : 20158
Store L1D Miss : 552
No Page Map Rejects : 7
Unable to parse data source : 0

Original-patch-by: Dick Fowles <rfowles@redhat.com>
Original-patch-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-qkyvao3qsrnwazf0w1jvsh7z@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-c2c.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 56 insertions(+)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 2b99d1273024..d365902acf61 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -55,6 +55,7 @@ struct perf_c2c {

bool show_src;
bool use_stdio;
+ bool stats_only;
};

static struct perf_c2c c2c;
@@ -1731,6 +1732,51 @@ static int setup_nodes(struct perf_session *session)
return 0;
}

+static void print_c2c__display_stats(FILE *out)
+{
+ int llc_misses;
+ struct c2c_stats *stats = &c2c.hists.stats;
+
+ llc_misses = stats->lcl_dram +
+ stats->rmt_dram +
+ stats->rmt_hit +
+ stats->rmt_hitm;
+
+ fprintf(out, "=================================================\n");
+ fprintf(out, " Trace Event Information \n");
+ fprintf(out, "=================================================\n");
+ fprintf(out, " Total records : %10d\n", stats->nr_entries);
+ fprintf(out, " Locked Load/Store Operations : %10d\n", stats->locks);
+ fprintf(out, " Load Operations : %10d\n", stats->load);
+ fprintf(out, " Loads - uncacheable : %10d\n", stats->ld_uncache);
+ fprintf(out, " Loads - IO : %10d\n", stats->ld_io);
+ fprintf(out, " Loads - Miss : %10d\n", stats->ld_miss);
+ fprintf(out, " Loads - no mapping : %10d\n", stats->ld_noadrs);
+ fprintf(out, " Load Fill Buffer Hit : %10d\n", stats->ld_fbhit);
+ fprintf(out, " Load L1D hit : %10d\n", stats->ld_l1hit);
+ fprintf(out, " Load L2D hit : %10d\n", stats->ld_l2hit);
+ fprintf(out, " Load LLC hit : %10d\n", stats->ld_llchit + stats->lcl_hitm);
+ fprintf(out, " Load Local HITM : %10d\n", stats->lcl_hitm);
+ fprintf(out, " Load Remote HITM : %10d\n", stats->rmt_hitm);
+ fprintf(out, " Load Remote HIT : %10d\n", stats->rmt_hit);
+ fprintf(out, " Load Local DRAM : %10d\n", stats->lcl_dram);
+ fprintf(out, " Load Remote DRAM : %10d\n", stats->rmt_dram);
+ fprintf(out, " Load MESI State Exclusive : %10d\n", stats->ld_excl);
+ fprintf(out, " Load MESI State Shared : %10d\n", stats->ld_shared);
+ fprintf(out, " Load LLC Misses : %10d\n", llc_misses);
+ fprintf(out, " LLC Misses to Local DRAM : %10.1f%%\n", ((double)stats->lcl_dram/(double)llc_misses) * 100.);
+ fprintf(out, " LLC Misses to Remote DRAM : %10.1f%%\n", ((double)stats->rmt_dram/(double)llc_misses) * 100.);
+ fprintf(out, " LLC Misses to Remote cache (HIT) : %10.1f%%\n", ((double)stats->rmt_hit /(double)llc_misses) * 100.);
+ fprintf(out, " LLC Misses to Remote cache (HITM) : %10.1f%%\n", ((double)stats->rmt_hitm/(double)llc_misses) * 100.);
+ fprintf(out, " Store Operations : %10d\n", stats->store);
+ fprintf(out, " Store - uncacheable : %10d\n", stats->st_uncache);
+ fprintf(out, " Store - no mapping : %10d\n", stats->st_noadrs);
+ fprintf(out, " Store L1D Hit : %10d\n", stats->st_l1hit);
+ fprintf(out, " Store L1D Miss : %10d\n", stats->st_l1miss);
+ fprintf(out, " No Page Map Rejects : %10d\n", stats->nomap);
+ fprintf(out, " Unable to parse data source : %10d\n", stats->noparse);
+}
+
static void print_cacheline(struct c2c_hists *c2c_hists,
struct hist_entry *he_cl,
struct perf_hpp_list *hpp_list,
@@ -1794,6 +1840,11 @@ static void perf_c2c__hists_fprintf(FILE *out)
{
setup_pager();

+ print_c2c__display_stats(out);
+
+ if (c2c.stats_only)
+ return;
+
fprintf(out, "\n");
fprintf(out, "=================================================\n");
fprintf(out, " Shared Data Cache Line Table \n");
@@ -2005,6 +2056,8 @@ static int perf_c2c__report(int argc, const char **argv)
#ifdef HAVE_SLANG_SUPPORT
OPT_BOOLEAN(0, "stdio", &c2c.use_stdio, "Use the stdio interface"),
#endif
+ OPT_BOOLEAN(0, "stats", &c2c.stats_only,
+ "Use the stdio interface"),
OPT_END()
};
int err = 0;
@@ -2014,6 +2067,9 @@ static int perf_c2c__report(int argc, const char **argv)
if (argc)
usage_with_options(report_c2c_usage, c2c_options);

+ if (c2c.stats_only)
+ c2c.use_stdio = true;
+
if (c2c.use_stdio)
use_browser = 0;
else
--
2.7.4