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40d81772da
linux/tools/perf
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Arnaldo Carvalho de Melo 40d81772da perf top: Collapse and resort all evsels in a group 
And link them, i.e. find the hist entries in the non-leader events and
link them to the ones in the leader.

This should be the same thing already done for the 'perf report' case,
but now we do it periodically.

With this in place we get percentages in from the second overhead column
on, not just on the first (the leader).

Try it using:

  perf top --stdio -e '{cycles,instructions}'

You should see something like:

   PerfTop:   20776 irqs/sec  kernel:68.7%  exact:  0.0% lost: 0/0 drop: 0/0 [cycles],  (all, 8 CPUs)
  ---------------------------------------------------------------------------------------------------

     4.44%   0.44%  [kernel]                 [k] do_syscall_64
     2.27%   0.17%  [kernel]                 [k] entry_SYSCALL_64
     1.73%   0.27%  [kernel]                 [k] syscall_return_via_sysret
     1.60%   0.91%  [kernel]                 [k] _raw_spin_lock_irqsave
     1.45%   3.53%  libglib-2.0.so.0.6000.4  [.] g_string_insert_unichar
     1.39%   0.21%  [kernel]                 [k] copy_user_enhanced_fast_string
     1.26%   1.15%  [kernel]                 [k] psi_task_change
     1.16%   0.14%  libpixman-1.so.0.38.0    [.] 0x000000000006f403
     1.00%   0.32%  [kernel]                 [k] __sched_text_start
     0.97%   2.11%  [kernel]                 [k] n_tty_write
     0.96%   0.04%  [kernel]                 [k] queued_spin_lock_slowpath
     0.93%   0.88%  [kernel]                 [k] menu_select
     0.87%   0.14%  [kernel]                 [k] try_to_wake_up
     0.77%   0.10%  libpixman-1.so.0.38.0    [.] 0x000000000006f40b
     0.73%   0.09%  libpixman-1.so.0.38.0    [.] 0x000000000006f413
     0.69%   0.48%  libc-2.29.so             [.] __memmove_avx_unaligned_erms
     0.68%   0.29%  [kernel]                 [k] _raw_spin_lock_irq
     0.61%   0.04%  libpixman-1.so.0.38.0    [.] 0x000000000006f423
     0.60%   0.37%  [kernel]                 [k] native_sched_clock
     0.57%   0.23%  [kernel]                 [k] do_idle
     0.57%   0.23%  [kernel]                 [k] __fget
     0.56%   0.30%  [kernel]                 [k] __switch_to_asm
     0.56%   0.00%  libc-2.29.so             [.] __memset_avx2_erms
     0.52%   0.32%  [kernel]                 [k] _raw_spin_lock
     0.49%   0.24%  [kernel]                 [k] n_tty_poll
     0.49%   0.54%  libglib-2.0.so.0.6000.4  [.] g_mutex_lock
     0.48%   0.62%  [kernel]                 [k] _raw_spin_unlock_irqrestore
     0.47%   0.27%  [kernel]                 [k] __switch_to
     0.47%   0.25%  [kernel]                 [k] pick_next_task_fair
     0.45%   0.17%  [kernel]                 [k] filldir64
     0.40%   0.16%  [kernel]                 [k] update_rq_clock
     0.39%   0.19%  [kernel]                 [k] enqueue_task_fair
  #

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-uw8cjeifxvjpkjp6x2iil0ar@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-12 16:26:02 -03:00
..
arch perf tools: Fix paths in include statements 2019-08-12 16:26:02 -03:00
bench Merge remote-tracking branch 'torvalds/master' into perf/core 2019-08-12 16:25:00 -03:00
Documentation perf config: Document the PERF_CONFIG environment variable 2019-08-12 16:26:02 -03:00
examples/bpf perf trace beauty: Add BPF augmenter for the 'rename' syscall 2019-07-29 18:34:42 -03:00
include/bpf perf include bpf: Add bpf_tail_call() prototype 2019-07-29 18:34:40 -03:00
jvmti tools build: Check if gettid() is available before providing helper 2019-07-07 17:53:09 -03:00
lib libperf: Initial documentation 2019-07-29 18:34:47 -03:00
pmu-events perf vendor events intel: Add Icelake V1.00 event file 2019-08-12 16:26:02 -03:00
python treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 407 2019-06-05 17:37:14 +02:00
scripts perf scripts python: export-to-postgresql.py: Export switch events 2019-07-10 13:05:12 -03:00
tests perf test vfs_getname: Disable ~/.perfconfig to get default output 2019-08-12 16:26:02 -03:00
trace tools perf beauty: Fix usbdevfs_ioctl table generator to handle _IOC() 2019-07-29 09:03:42 -03:00
ui perf tools: Fix paths in include statements 2019-08-12 16:26:02 -03:00
util perf hist: Remove dummy entries when finding real ones. 2019-08-12 16:26:02 -03:00
.gitignore
Build perf tools: Rename build libperf to perf 2019-02-14 15:18:08 -03:00
builtin-annotate.c perf evsel: Rename struct perf_evsel to struct evsel 2019-07-29 18:34:42 -03:00
builtin-bench.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-buildid-cache.c perf data: Add global path holder 2019-02-22 16:52:07 -03:00
builtin-buildid-list.c perf data: Add global path holder 2019-02-22 16:52:07 -03:00
builtin-c2c.c perf evlist: Rename struct perf_evlist to struct evlist 2019-07-29 18:34:42 -03:00
builtin-config.c perf tools: Add missing headers, mostly stdlib.h 2019-07-09 10:13:22 -03:00
builtin-data.c
builtin-diff.c perf evlist: Rename struct perf_evlist to struct evlist 2019-07-29 18:34:42 -03:00
builtin-evlist.c libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel 2019-07-29 18:34:45 -03:00
builtin-ftrace.c Merge remote-tracking branch 'torvalds/master' into perf/core 2019-08-12 16:25:00 -03:00
builtin-help.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-inject.c libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel 2019-07-29 18:34:45 -03:00
builtin-kallsyms.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 251 2019-06-05 17:30:26 +02:00
builtin-kmem.c perf evsel: Rename struct perf_evsel to struct evsel 2019-07-29 18:34:42 -03:00
builtin-kvm.c libperf: Add threads to struct perf_evlist 2019-07-29 18:34:45 -03:00
builtin-list.c perf list: Output tool events 2019-04-01 14:49:25 -03:00
builtin-lock.c perf evsel: Rename struct perf_evsel to struct evsel 2019-07-29 18:34:42 -03:00
builtin-mem.c perf evsel: Rename struct perf_evsel to struct evsel 2019-07-29 18:34:42 -03:00
builtin-probe.c perf probe: Avoid calling freeing routine multiple times for same pointer 2019-07-23 09:04:41 -03:00
builtin-record.c libperf: Add threads to struct perf_evlist 2019-07-29 18:34:45 -03:00
builtin-report.c libperf: Move nr_members from perf's evsel to libperf's perf_evsel 2019-07-29 18:34:46 -03:00
builtin-sched.c libperf: Add perf_cpu_map__new()/perf_cpu_map__read() functions 2019-07-29 18:34:45 -03:00
builtin-script.c libperf: Move nr_members from perf's evsel to libperf's perf_evsel 2019-07-29 18:34:46 -03:00
builtin-stat.c libperf: Move nr_members from perf's evsel to libperf's perf_evsel 2019-07-29 18:34:46 -03:00
builtin-timechart.c libperf: Move perf_event_attr field from perf's evsel to libperf's perf_evsel 2019-07-29 18:34:45 -03:00
builtin-top.c perf top: Collapse and resort all evsels in a group 2019-08-12 16:26:02 -03:00
builtin-trace.c perf trace: Fix segmentation fault when access syscall info on arm64 2019-08-12 16:26:02 -03:00
builtin-version.c perf version: Fix segfault due to missing OPT_END() 2019-07-15 07:59:05 -03:00
builtin.h perf script: Add array bound checking to list_scripts 2019-03-11 16:33:19 -03:00
check-headers.sh tools perf: Move from sane_ctype.h obtained from git to the Linux's original 2019-06-25 21:02:47 -03:00
command-list.txt
CREDITS
design.txt perf/doc: Update design.txt for exclude_{host|guest} flags 2019-01-21 11:01:18 +01:00
Makefile
Makefile.config libperf: Make libperf.a part of the perf build 2019-07-29 18:34:43 -03:00
Makefile.perf libperf: Add libperf to the python.so build 2019-07-29 18:34:44 -03:00
MANIFEST tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
perf-archive.sh
perf-completion.sh
perf-read-vdso.c perf tools: Make find_vdso_map() more modular 2019-01-08 13:28:13 -03:00
perf-sys.h
perf-with-kcore.sh Merge branch 'x86/cpu' into perf/core, to pick up dependent changes 2019-06-17 12:29:16 +02:00
perf.c perf config: Honour $PERF_CONFIG env var to specify alternate .perfconfig 2019-08-12 16:26:02 -03:00
perf.h perf tools: Increase MAX_NR_CPUS and MAX_CACHES 2019-06-25 08:47:10 -03:00