| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20191022080710.6491-1-yao.jin@linux.intel.com>
Date: Tue, 22 Oct 2019 16:07:05 +0800
From: Jin Yao <yao.jin@...ux.intel.com>
To: acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
mingo@...hat.com, alexander.shishkin@...ux.intel.com
Cc: Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
kan.liang@...el.com, yao.jin@...el.com,
Jin Yao <yao.jin@...ux.intel.com>
Subject: [PATCH v3 0/5] perf report: Support sorting all blocks by cycles
It would be useful to support sorting for all blocks by the
sampled cycles percent per block. This is useful to concentrate
on the globally hottest blocks.
This patch series implements a new sort option "total_cycles" which
sorts all blocks by 'Sampled Cycles%'. The 'Sampled Cycles%' is
block sampled cycles aggregation / total sampled cycles
For example,
perf record -b ./div
perf report -s total_cycles --stdio
# 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@...+0 -> rand@...+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
......
This patch series supports both stdio and tui. And also with the supporting
of --percent-limit.
v3:
---
1. Move common block info functions to block-info.h/block-info.c
2. Remove nasty hack for skipping calculation of column length.
3. Some minor cleanup.
v2:
---
Rebase to perf/core branch
Jin Yao (5):
perf util: Cleanup and refactor block info functions
perf util: Count the total cycles of all samples
perf report: Sort by sampled cycles percent per block for stdio
perf report: Support --percent-limit for total_cycles
perf report: Sort by sampled cycles percent per block for tui
tools/perf/Documentation/perf-report.txt | 10 +
tools/perf/builtin-annotate.c | 2 +-
tools/perf/builtin-diff.c | 121 +-------
tools/perf/builtin-report.c | 365 ++++++++++++++++++++++-
tools/perf/builtin-top.c | 3 +-
tools/perf/ui/browsers/hists.c | 62 +++-
tools/perf/ui/browsers/hists.h | 2 +
tools/perf/ui/stdio/hist.c | 29 +-
tools/perf/util/Build | 1 +
tools/perf/util/block-info.c | 139 +++++++++
tools/perf/util/block-info.h | 45 +++
tools/perf/util/hist.c | 13 +-
tools/perf/util/hist.h | 15 +-
tools/perf/util/sort.c | 5 +
tools/perf/util/sort.h | 1 +
tools/perf/util/symbol.c | 22 --
tools/perf/util/symbol.h | 24 --
tools/perf/util/symbol_conf.h | 1 +
18 files changed, 698 insertions(+), 162 deletions(-)
create mode 100644 tools/perf/util/block-info.c
create mode 100644 tools/perf/util/block-info.h
--
2.17.1
Powered by blists - more mailing lists