Messages in this thread | | | From | "Masami Hiramatsu (Google)" <> | Subject | [PATCH 0/2] tracing/hist: Add percentage histogram suffixes | Date | Mon, 1 Aug 2022 12:00:40 +0900 |
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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@kernel.org>
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