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macOS get average time for 10 command runs, using coreutils/date and node
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atime() { | |
local times=() | |
local start end total | |
for i in {1..10}; do | |
start=$(/usr/local/opt/coreutils/libexec/gnubin/date +%s%N) | |
"$@" >/dev/null 2>&1 | |
end=$(/usr/local/opt/coreutils/libexec/gnubin/date +%s%N) | |
total=$(expr $end - $start) | |
times+=( $total ) | |
node -p "Math.round(($total)/1000)/1000000" | |
done | |
times=$(echo ${times[@]} | tr " " ",") | |
node -e " \ | |
a=[${times}]; \ | |
r=i=>Math.round(i/1000)/1000000; \ | |
a.sort((a,b)=>a-b); \ | |
avg=a.reduce((a,b)=>a+b)/a.length; \ | |
precision=Math.round((avg-a[0])/avg*100); \ | |
console.log('------------'); | |
console.log(r(avg) + ' ±' + precision + '%'); \ | |
" | |
} |
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