linux-kernel - [PATCH 0/2] tracing/hist: Add percentage histogram suffixes

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

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <165932284025.2881436.6085809619146158354.stgit@devnote2>
Date:   Mon,  1 Aug 2022 12:00:40 +0900
From:   "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Tom Zanussi <zanussi@...nel.org>, Ingo Molnar <mingo@...hat.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] tracing/hist: Add percentage histogram suffixes

Hi,

Here are a couple of patches to add .percent and .graph histogram
value suffixes to show the value in percentage and in bar-graph.

This will help us to check the trend of the histogram instantly
without the post processing tool.

Here shows the example of the percentage and the bar graph of
the runtime of the running tasks.

/sys/kernel/tracing # echo hist:keys=pid:vals=runtime.percent,runtime.graph:sort
=pid >> events/sched/sched_stat_runtime/trigger
/sys/kernel/tracing # sleep 10
/sys/kernel/tracing # cat events/sched/sched_stat_runtime/hist
# event histogram
#
# trigger info: hist:keys=pid:vals=hitcount,runtime.percent,runtime.graph:sort=pid:size=2048 [active]
#

{ pid:          8 } hitcount:         11  runtime:       4.11  runtime: #                   
{ pid:          9 } hitcount:          4  runtime:       1.28  runtime:                     
{ pid:         14 } hitcount:         10  runtime:       2.22  runtime:                     
{ pid:         15 } hitcount:          1  runtime:       0.07  runtime:                     
{ pid:         16 } hitcount:         21  runtime:       3.35  runtime: #                   
{ pid:         57 } hitcount:          6  runtime:       2.41  runtime: #                   
{ pid:         61 } hitcount:         42  runtime:       9.79  runtime: ####                
{ pid:         66 } hitcount:          5  runtime:       0.69  runtime:                     
{ pid:        147 } hitcount:         36  runtime:      45.33  runtime: ####################
{ pid:       8548 } hitcount:          9  runtime:      17.25  runtime: #######             
{ pid:       8549 } hitcount:          8  runtime:      13.43  runtime: #####               

Totals:
    Hits: 153
    Entries: 11
    Dropped: 0


Thank you,

---

Masami Hiramatsu (Google) (2):
      tracing: Add .percent suffix option to histogram values
      tracing: Add .graph suffix option to histogram value


 kernel/trace/trace.c             |    3 +
 kernel/trace/trace_events_hist.c |  110 ++++++++++++++++++++++++++++++++++++--
 2 files changed, 105 insertions(+), 8 deletions(-)

--
Masami Hiramatsu (Google) <mhiramat@...nel.org>