Messages in this thread | | | Date | Mon, 1 Aug 2022 16:58:40 -0400 | From | Steven Rostedt <> | Subject | Re: [PATCH 0/2] tracing/hist: Add percentage histogram suffixes |
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On Mon, 1 Aug 2022 12:00:40 +0900 "Masami Hiramatsu (Google)" <mhiramat@kernel.org> wrote:
> 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 >
Hi Masami,
Thanks for this as well. But as it's a new feature, and I freeze new features when the merge window starts, I'll add this to my queue for the next window.
-- Steve
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