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| author | Namhyung Kim <namhyung@kernel.org> | 2024-01-25 06:51:24 +0100 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2024-01-26 00:24:04 +0100 |
| commit | 7727d59de44e4568d0ad0f3867c8bdec69d688fe (patch) | |
| tree | f636d7e5416cab8a3001f1910f52721ddface0ed /tools/perf/Documentation/perf-report.txt | |
| parent | perf pmu: Treat the msr pmu as software (diff) | |
| download | linux-7727d59de44e4568d0ad0f3867c8bdec69d688fe.tar.xz linux-7727d59de44e4568d0ad0f3867c8bdec69d688fe.zip | |
perf tools: Add -H short option for --hierarchy
I found the hierarchy mode useful, but it's easy to make a typo when
using it. Let's add a short option for that.
Also update the documentation. :)
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: https://lore.kernel.org/r/20240125055124.1579617-1-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Diffstat (limited to 'tools/perf/Documentation/perf-report.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-report.txt | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 38f59ac064f7..d8b863e01fe0 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -531,8 +531,35 @@ include::itrace.txt[] --raw-trace:: When displaying traceevent output, do not use print fmt or plugins. +-H:: --hierarchy:: - Enable hierarchical output. + Enable hierarchical output. In the hierarchy mode, each sort key groups + samples based on the criteria and then sub-divide it using the lower + level sort key. + + For example: + In normal output: + + perf report -s dso,sym + # Overhead Shared Object Symbol + 50.00% [kernel.kallsyms] [k] kfunc1 + 20.00% perf [.] foo + 15.00% [kernel.kallsyms] [k] kfunc2 + 10.00% perf [.] bar + 5.00% libc.so [.] libcall + + In hierarchy output: + + perf report -s dso,sym --hierarchy + # Overhead Shared Object / Symbol + 65.00% [kernel.kallsyms] + 50.00% [k] kfunc1 + 15.00% [k] kfunc2 + 30.00% perf + 20.00% [.] foo + 10.00% [.] bar + 5.00% libc.so + 5.00% [.] libcall --inline:: If a callgraph address belongs to an inlined function, the inline stack |