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perf c2c report: Add cacheline index entry

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It's convenient to have an index for each cacheline to help discussions
about results over the phone.

Add new 'Index' and 'Num' fields in main and single cacheline tables.

$ perf c2c report
  =================================================
             Shared Data Cache Line Table
  =================================================
  #
  #                              Total      Lcl  ----- LLC Load Hitm -----
  # Index           Cacheline  records     Hitm    Total      Lcl      Rmt  ...
  # .....  ..................  .......  .......  .......  .......  .......
  #
        0  0xffff880036233b40        1   11.11%        1        1        0
        1  0xffff88009ccb2900        1   11.11%        1        1        0
        2  0xffff8800b5b3bc40        7   11.11%        1        1        0
  ...

  =================================================
        Shared Cache Line Distribution Pareto
  =================================================
  #
  #        ----- HITM -----  -- Store Refs --        Data address
  #   Num      Rmt      Lcl   L1 Hit  L1 Miss              Offset      Pid  ...
  # .....  .......  .......  .......  .......  ..................  .......
  #
    -------------------------------------------------------------
        0        0        1        0        0  0xffff880036233b40
    -------------------------------------------------------------
             0.00%  100.00%    0.00%    0.00%                0x30        0

    -------------------------------------------------------------
        1        0        1        0        0  0xffff88009ccb2900
    -------------------------------------------------------------
             0.00%  100.00%    0.00%    0.00%                0x28      549
  ...

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: Don Zickus <dzickus@redhat.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-4dhfagaz57tvrfjbg8nd2h4u@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2016-07-06 15:40:09 +02:00 committed by Arnaldo Carvalho de Melo
parent 25aa84e32d
commit bb342daed8
1 changed files with 61 additions and 3 deletions
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64
tools/perf/builtin-c2c.c
View File

@ -36,6 +36,7 @@ struct c2c_hist_entry {
struct c2c_stats stats;
unsigned long *cpuset;
struct c2c_stats *node_stats;
unsigned int cacheline_idx;
struct compute_stats cstats;
@ -1088,6 +1089,29 @@ cpucnt_entry(struct perf_hpp_fmt *fmt __maybe_unused, struct perf_hpp *hpp,
return scnprintf(hpp->buf, hpp->size, "%*s", width, buf);
}
static int
cl_idx_entry(struct perf_hpp_fmt *fmt __maybe_unused, struct perf_hpp *hpp,
struct hist_entry *he)
{
struct c2c_hist_entry *c2c_he;
int width = c2c_width(fmt, hpp, he->hists);
char buf[10];
c2c_he = container_of(he, struct c2c_hist_entry, he);
scnprintf(buf, 10, "%u", c2c_he->cacheline_idx);
return scnprintf(hpp->buf, hpp->size, "%*s", width, buf);
}
static int
cl_idx_empty_entry(struct perf_hpp_fmt *fmt __maybe_unused, struct perf_hpp *hpp,
struct hist_entry *he)
{
int width = c2c_width(fmt, hpp, he->hists);
return scnprintf(hpp->buf, hpp->size, "%*s", width, "");
}
#define HEADER_LOW(__h) \
{ \
.line[1] = { \
@ -1433,6 +1457,30 @@ static struct c2c_dimension dim_srcline = {
.se = &sort_srcline,
};
static struct c2c_dimension dim_dcacheline_idx = {
.header = HEADER_LOW("Index"),
.name = "cl_idx",
.cmp = empty_cmp,
.entry = cl_idx_entry,
.width = 5,
};
static struct c2c_dimension dim_dcacheline_num = {
.header = HEADER_LOW("Num"),
.name = "cl_num",
.cmp = empty_cmp,
.entry = cl_idx_entry,
.width = 5,
};
static struct c2c_dimension dim_dcacheline_num_empty = {
.header = HEADER_LOW("Num"),
.name = "cl_num_empty",
.cmp = empty_cmp,
.entry = cl_idx_empty_entry,
.width = 5,
};
static struct c2c_dimension *dimensions[] = {
&dim_dcacheline,
&dim_offset,
@ -1472,6 +1520,9 @@ static struct c2c_dimension *dimensions[] = {
&dim_mean_load,
&dim_cpucnt,
&dim_srcline,
&dim_dcacheline_idx,
&dim_dcacheline_num,
&dim_dcacheline_num_empty,
NULL,
};
@ -1761,6 +1812,10 @@ static int resort_cl_cb(struct hist_entry *he)
calc_width(he);
if (display && c2c_hists) {
static unsigned int idx;
c2c_he->cacheline_idx = idx++;
c2c_hists__reinit(c2c_hists, c2c.cl_output, c2c.cl_resort);
hists__collapse_resort(&c2c_hists->hists, NULL);
@ -1948,10 +2003,10 @@ static void print_cacheline(struct c2c_hists *c2c_hists,
fprintf(out, "\n");
}
fprintf(out, " ------------------------------------------------------\n");
fprintf(out, " -------------------------------------------------------------\n");
__hist_entry__snprintf(he_cl, &hpp, hpp_list);
fprintf(out, "%s\n", bf);
fprintf(out, " ------------------------------------------------------\n");
fprintf(out, " -------------------------------------------------------------\n");
hists__fprintf(&c2c_hists->hists, false, 0, 0, 0, out, true);
}
@ -1964,6 +2019,7 @@ static void print_pareto(FILE *out)
perf_hpp_list__init(&hpp_list);
ret = hpp_list__parse(&hpp_list,
"cl_num,"
"cl_rmt_hitm,"
"cl_lcl_hitm,"
"cl_stores_l1hit,"
@ -2321,7 +2377,8 @@ static int build_cl_output(char *cl_sort)
}
if (asprintf(&c2c.cl_output,
"%s%s%s%s%s%s%s%s%s",
"%s%s%s%s%s%s%s%s%s%s",
c2c.use_stdio ? "cl_num_empty," : "",
"percent_rmt_hitm,"
"percent_lcl_hitm,"
"percent_stores_l1hit,"
@ -2470,6 +2527,7 @@ static int perf_c2c__report(int argc, const char **argv)
}
c2c_hists__reinit(&c2c.hists,
"cl_idx,"
"dcacheline,"
"tot_recs,"
"percent_hitm,"