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      1 awk '
      2 BEGIN {
      3 	OFS = "\t"
      4 	print "     new      old   new/old"
      5 	print ""
      6 }
      7 /differ/
      8 /:$/ {	name = $1; cnt = 0; next }
      9 $1 ~ /user|sys/ {
     10 	n = split($2, x, "m")	# 0m0.23s
     11 	if (n == 1)
     12 		time[cnt] += x[1]
     13 	else
     14 		time[cnt] += 60 * x[1] + x[2]
     15 }
     16 $1 ~ /sys/ {
     17 	cnt++
     18 	if (cnt == 2)
     19 		dump()
     20 }
     21 function dump() {
     22 	old = time[1]
     23 	new = time[0]
     24 	if (old > 0) {
     25 		printf "%8.2f %8.2f %8.3f  %s\n", new, old, new/old, name
     26 		rat += new/old
     27 	}
     28 	nrat++
     29 	totnew += new
     30 	totold += old
     31 	time[0] = time[1] = cnt = 0
     32 }
     33 END {
     34 	print ""
     35 	printf "%8.2f %8.2f\n\n", totnew, totold
     36 	printf "avg new/old   = %.3f\n", rat/nrat
     37 	printf "total new/old = %.3f\n", totnew/totold
     38 	print nrat " tests"
     39 }
     40 ' $*
     41