# $Id: report.awk,v 1.3 2008/01/02 15:54:03 bostic Exp $
/^[^#]/ {
total[$1] += $2
sum[$1] += $2 * $2
++count[$1];
}
END {
# Compute the average, find the maximum.
for (i in total) {
avg[i] = total[i] / count[i];
if (max < avg[i])
max = avg[i]
}
for (i in total) {
# Calculate variance by raw score method.
var = (sum[i] - ((total[i] * total[i]) / count[i])) / count[i];
# The standard deviation is the square root of the variance.
stdv = sqrt(var);
# Display the release value, the average score, and run count.
printf("%s:%.2f:%d:", i, avg[i], count[i]);
# If this run wasn't the fastest, display the percent by which
# this run was slower.
if (max != avg[i])
printf("%.0f%%", ((max - avg[i]) / max) * 100);
printf(":");
# If there was more than a single run, display the relative
# standard deviation.
if (count[i] > 1)
printf("%.0f%%", stdv * 100 / avg[i]);
printf("\n");
}
}