Messages in this thread | | | Date | Thu, 23 Jan 2014 17:22:48 +0100 | From | Jiri Olsa <> | Subject | Re: [PATCHSET 00/24] perf tools: Add support to accumulate hist periods (v7) |
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On Thu, Jan 23, 2014 at 09:13:44AM +0900, Namhyung Kim wrote: > Hello, > > This is a new attempt to implement cumulative hist period report. > This work begins from Arun's SORT_INCLUSIVE patch [1] but I completely > rewrote it from scratch. > > This patchset is based on my previous patchset [2] but I think it's > almost independent so that it can be applied separately. > > Please see the patch 03/24. I refactored functions that add hist > entries with struct hist_entry_iter. While I converted all functions > carefully, it'd be better anyone can test and confirm that I didn't > mess up something - especially for branch stack and mem stuff. > > This patchset basically adds period in a sample to every node in the > callchain. A hist_entry now has an additional fields to keep the > cumulative period if --children option is given on perf report. > > I changed the option as a separate --children and added a new > "Children" column (and renamed the default "Overhead" column into > "Self"). The output will be sorted by children (cumulative) overhead > for now. The reason I changed to the --children is that I still think > it's much different from other --call-graph options. The --call-graph > option will take care of it even with --children option. > > I know that the UI should be changed also to be more flexible as Ingo > requested, but I'd like to do this first and then move to work on the > next. I also added a new config option to enable it by default.
SNIP
> --- _start > > > Case 3. > > $ perf report --no-call-graph --children --stdio > > # Self Children Command Shared Object Symbol > # ........ ........ ....... ................. ..................... > # > 0.00% 91.50% abc libc-2.17.so [.] __libc_start_main > 0.00% 91.50% abc abc [.] main > 0.00% 91.50% abc abc [.] c > 0.00% 91.50% abc abc [.] b > 91.50% 91.50% abc abc [.] a > 0.00% 8.18% abc ld-2.17.so [.] _dl_sysdep_start > 8.18% 8.18% abc ld-2.17.so [.] strlen > 0.01% 0.33% abc ld-2.17.so [.] _start > 0.31% 0.31% abc [kernel.kallsyms] [k] page_fault
I couldnt get this one working:
[jolsa@krava perf]$ ./perf report --no-call-graph --children --stdio
# # Self Children Command Shared Object Symbol # ........ ........ ....... ............. .......................... # 94.47% 94.47% abc abc [.] a 4.74% 4.74% abc ld-2.17.so [.] _dl_map_object_from_fd 0.75% 0.75% abc ld-2.17.so [.] _dl_start 0.04% 0.04% abc ld-2.17.so [.] _start
I was looking for cumulated stdio output without callchain unwinded, TUI shows it properly as default
jirka
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