stats

#!/bin/bash

go test -bench=".*" ./ 2>/dev/null|
awk -F' ' '
BEGIN {
	print "benchmark                                      iter    time/iter   bytes/op     allocs/op  tt.time   tt.bytes       time/alloc"
}
/Benchmark/ {
	gsub(/ +/," ",$0)
	printf "%-40s %10d %6d %s %5d %s %3d %s %6.2f s %7d KB %7.2f ns/alloc\n",$1,$2,$3,$4,$5,$6,$7,$8,$2*$3/1000000000,$2*$5/10000,$3/$7
	gsub(/(Unm|M)arshal/,"",$1)
	pname[$1]=$1
	for (i=2; i<NF; i++) {
		if ($i ~ /[0-9]/) proto[$1,i]+=$i
		else proto[$1,i]=$i
	}
}
END {
	print "---\ntotals:"
	for (p in pname) {
		pr=pname[p]
		printf "%-40s %10d %6d %s %5d %s %3d %s %6.2f s %7d KB %7.2f ns/alloc\n",pr,proto[pr,2],proto[pr,3],proto[pr,4],proto[pr,5],proto[pr,6],proto[pr,7],
			proto[pr,8],proto[pr,2]*proto[pr,3]/1000000000,proto[pr,2]*proto[pr,5]/10000,proto[pr,3]/proto[pr,7]
	}
}
'