Messages in this thread | | | From | "Masami Hiramatsu (Google)" <> | Subject | [PATCH v3 0/3] tracing/hist: Add percentage histogram suffixes | Date | Tue, 23 Aug 2022 11:58:57 +0900 |
| |
Hi,
Here is the 3rd version of .percent and .graph suffixes for histogram trigger to show the value in percentage and in bar-graph respectively.
I added one minor bugfix patch and update original patches to show hitcount.graph and hitcount.percent correctly.
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 hitcount of the running tasks.
# cd /sys/kernel/debug/tracing/ # echo hist:keys=pid:vals=hitcount.percent,hitcount.graph:sort=pid > \ events/sched/sched_stat_runtime/trigger # sleep 10 # cat events/sched/sched_stat_runtime/hist # event histogram # # trigger info: hist:keys=pid:vals=hitcount,hitcount.percent,hitcount.graph:sort=pid:size=2048 [active] #
{ pid: 8 } hitcount: 3 hitcount (%): 3.33 hitcount: ### { pid: 16 } hitcount: 10 hitcount (%): 11.11 hitcount: ########## { pid: 26 } hitcount: 1 hitcount (%): 1.11 hitcount: # { pid: 57 } hitcount: 3 hitcount (%): 3.33 hitcount: ### { pid: 61 } hitcount: 20 hitcount (%): 22.22 hitcount: #################### { pid: 64 } hitcount: 3 hitcount (%): 3.33 hitcount: ### { pid: 69 } hitcount: 2 hitcount (%): 2.22 hitcount: ## { pid: 70 } hitcount: 1 hitcount (%): 1.11 hitcount: # { pid: 77 } hitcount: 10 hitcount (%): 11.11 hitcount: ########## { pid: 124 } hitcount: 2 hitcount (%): 2.22 hitcount: ## { pid: 130 } hitcount: 2 hitcount (%): 2.22 hitcount: ## { pid: 146 } hitcount: 18 hitcount (%): 20.00 hitcount: ################## { pid: 153 } hitcount: 8 hitcount (%): 8.88 hitcount: ######## { pid: 154 } hitcount: 7 hitcount (%): 7.77 hitcount: #######
Totals: Hits: 90 Entries: 14 Dropped: 0
Thank you,
---
Masami Hiramatsu (Google) (3): tracing: Fix to check event_mutex is held while accessing trigger list 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 | 160 +++++++++++++++++++++++++++++++---- kernel/trace/trace_events_trigger.c | 3 - 3 files changed, 147 insertions(+), 19 deletions(-)
-- Masami Hiramatsu (Google) <mhiramat@kernel.org>
| |