Patrick Bellasi | 49c9902 | 2016-03-14 20:00:41 +0000 | [diff] [blame] | 1 | #!/bin/bash |
| 2 | |
| 3 | # CPU to monitor |
| 4 | CPU=${1:-0} |
| 5 | # Sampling time |
| 6 | SLEEP=${2:-1} |
| 7 | # Samples to collect |
| 8 | COUNT=${3:-3} |
| 9 | |
| 10 | # Enter CPU's sysfs |
| 11 | cd /sys/devices/system/cpu |
| 12 | |
| 13 | # Initial C-State residencies counter |
| 14 | ISC=$(find cpu0/cpuidle -name "state*" | wc -l) |
| 15 | for I in $(seq 0 $((ISC-1))); do |
| 16 | LCS[$I]=`cat cpu$CPU/cpuidle/state$I/usage` |
| 17 | done |
| 18 | |
| 19 | # Dump header |
| 20 | printf "#%13s " "Time" |
| 21 | for I in $(seq 0 $((ISC-1))); do |
| 22 | printf "%14s " "idle$I" |
| 23 | done |
| 24 | echo |
| 25 | |
| 26 | # Sampling loop |
| 27 | for I in $(seq $COUNT); do |
| 28 | |
| 29 | sleep $SLEEP |
| 30 | |
| 31 | # Dump CPU C-State residencies |
| 32 | now=$(date +%s) |
| 33 | printf "%14d " $now |
| 34 | for I in $(seq 0 $((ISC-1))); do |
| 35 | U=`cat cpu$CPU/cpuidle/state$I/usage` |
| 36 | CCS=$(($U - ${LCS[$I]})) |
| 37 | printf "%14d " $CCS |
| 38 | LCS[$I]=$U |
| 39 | done |
| 40 | echo |
| 41 | |
| 42 | |
| 43 | done |
| 44 | |
| 45 | # vim: ts=2 |