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0b49f83657
We have already supported the '--total-cycles' option in previous patch.
It's also useful to show entries only above a threshold percent.
This patch enables '--percent-limit' for not showing entries
under that percent.
For example:
perf report --total-cycles --stdio --percent-limit 1
# To display the perf.data header info, please use --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 2M of event 'cycles'
# Event count (approx.): 2753248
#
# Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object
# ............... .............. ........... .......... ................................................................. ....................
#
26.04% 2.8M 0.40% 18 [div.c:42 -> div.c:39] div
15.17% 1.2M 0.16% 7 [random_r.c:357 -> random_r.c:380] libc-2.27.so
5.11% 402.0K 0.04% 2 [div.c:27 -> div.c:28] div
4.87% 381.6K 0.04% 2 [random.c:288 -> random.c:291] libc-2.27.so
4.53% 381.0K 0.04% 2 [div.c:40 -> div.c:40] div
3.85% 300.9K 0.02% 1 [div.c:22 -> div.c:25] div
3.08% 241.1K 0.02% 1 [rand.c:26 -> rand.c:27] libc-2.27.so
3.06% 240.0K 0.02% 1 [random.c:291 -> random.c:291] libc-2.27.so
2.78% 215.7K 0.02% 1 [random.c:298 -> random.c:298] libc-2.27.so
2.52% 198.3K 0.02% 1 [random.c:293 -> random.c:293] libc-2.27.so
2.36% 184.8K 0.02% 1 [rand.c:28 -> rand.c:28] libc-2.27.so
2.33% 180.5K 0.02% 1 [random.c:295 -> random.c:295] libc-2.27.so
2.28% 176.7K 0.02% 1 [random.c:295 -> random.c:295] libc-2.27.so
2.20% 168.8K 0.02% 1 [rand@plt+0 -> rand@plt+0] div
1.98% 158.2K 0.02% 1 [random_r.c:388 -> random_r.c:388] libc-2.27.so
1.57% 123.3K 0.02% 1 [div.c:42 -> div.c:44] div
1.44% 116.0K 0.42% 19 [random_r.c:357 -> random_r.c:394] libc-2.27.so
Committer testing:
From second exapmple onwards slightly edited for brevity:
# perf report --total-cycles --percent-limit 2 --stdio
# To display the perf.data header info, please use --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 6M of event 'cycles'
# Event count (approx.): 6299936
#
# Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object
# ............... .............. ........... .......... ...................................................................... ....................
#
2.17% 1.7M 0.08% 607 [compiler.h:199 -> common.c:221] [kernel.vmlinux]
#
# (Tip: Create an archive with symtabs to analyse on other machine: perf archive)
#
# perf report --total-cycles --percent-limit 1 --stdio
# Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object
2.17% 1.7M 0.08% 607 [compiler.h:199 -> common.c:221] [kernel.vmlinux]
1.75% 1.3M 8.34% 65.5K [memset-vec-unaligned-erms.S:147 -> memset-vec-unaligned-erms.S:151] libc-2.29.so
#
# perf report --total-cycles --percent-limit 0.7 --stdio
# Sampled Cycles% Sampled Cycles Avg Cycles% Avg Cycles [Program Block Range] Shared Object
2.17% 1.7M 0.08% 607 [compiler.h:199 -> common.c:221] [kernel.vmlinux]
1.75% 1.3M 8.34% 65.5K [memset-vec-unaligned-erms.S:147 -> memset-vec-unaligned-erms.S:151] libc-2.29.so
0.72% 544.5K 0.03% 230 [entry_64.S:657 -> entry_64.S:662] [kernel.vmlinux]
#
-------------------------------------------
It only shows the entries which 'Sampled Cycles%' > 1%.
v7:
---
No functional change. Only fix the conflict issue because
previous patches are changed.
v6:
---
No functional change. Only fix the conflict issue because
previous patches are changed.
v5:
---
No functional change. Only fix the conflict issue because
previous patches are changed.
v4:
---
No functional change. Only fix the build issue because
previous patches are changed.
Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20191107074719.26139-7-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_BLOCK_H
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#define __PERF_BLOCK_H
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#include <linux/types.h>
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#include <linux/refcount.h>
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#include "hist.h"
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#include "symbol.h"
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#include "sort.h"
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#include "ui/ui.h"
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struct block_info {
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struct symbol *sym;
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u64 start;
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u64 end;
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u64 cycles;
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u64 cycles_aggr;
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s64 cycles_spark[NUM_SPARKS];
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u64 total_cycles;
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int num;
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int num_aggr;
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refcount_t refcnt;
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};
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struct block_fmt {
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struct perf_hpp_fmt fmt;
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int idx;
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int width;
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const char *header;
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u64 total_cycles;
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u64 block_cycles;
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};
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enum {
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PERF_HPP_REPORT__BLOCK_TOTAL_CYCLES_PCT,
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PERF_HPP_REPORT__BLOCK_LBR_CYCLES,
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PERF_HPP_REPORT__BLOCK_CYCLES_PCT,
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PERF_HPP_REPORT__BLOCK_AVG_CYCLES,
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PERF_HPP_REPORT__BLOCK_RANGE,
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PERF_HPP_REPORT__BLOCK_DSO,
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PERF_HPP_REPORT__BLOCK_MAX_INDEX
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};
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struct block_report {
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struct block_hist hist;
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u64 cycles;
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struct block_fmt fmts[PERF_HPP_REPORT__BLOCK_MAX_INDEX];
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};
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struct block_hist;
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struct block_info *block_info__new(void);
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struct block_info *block_info__get(struct block_info *bi);
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void block_info__put(struct block_info *bi);
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static inline void __block_info__zput(struct block_info **bi)
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{
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block_info__put(*bi);
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*bi = NULL;
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}
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#define block_info__zput(bi) __block_info__zput(&bi)
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int64_t block_info__cmp(struct perf_hpp_fmt *fmt __maybe_unused,
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struct hist_entry *left, struct hist_entry *right);
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int block_info__process_sym(struct hist_entry *he, struct block_hist *bh,
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u64 *block_cycles_aggr, u64 total_cycles);
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struct block_report *block_info__create_report(struct evlist *evlist,
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u64 total_cycles);
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int report__browse_block_hists(struct block_hist *bh, float min_percent,
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struct evsel *evsel);
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float block_info__total_cycles_percent(struct hist_entry *he);
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#endif /* __PERF_BLOCK_H */
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