Easy vim benchmark (e.g: ./vim_benchmark.sh 10)

vim_benchmark.sh

#!/bin/bash

# e.g. bash vim_benchmark.sh 10

LOGFILE=$(mktemp)

ITER=$1

function echo_mean_and_std() {
    m=$(grep "editing files" $1 | awk 'BEGIN{m=0.0} {m+=$1} END{print m/NR}')
    v=$(grep "editing files" $1 | awk 'BEGIN{v=0.0} {v+=($1-'"$m"')*($1-'"$m"')} END{if (NR-1 > 0) print sqrt(v/(NR-1)); else print "NaN"}')
    echo -n "mean: $m, std: $v"
}

for i in $(seq 1 1 $ITER)
do
    echo -n "$i/$ITER trying..  "
    vim --startuptime $LOGFILE -c ":quit"
    echo_mean_and_std $LOGFILE
    echo ""
done

echo "Finished!"

1/10 trying..  mean: 112.591, std: NaN
2/10 trying..  mean: 101.499, std: 15.6872
3/10 trying..  mean: 97.3437, std: 13.2224
4/10 trying..  mean: 95.3912, std: 11.4805
5/10 trying..  mean: 94.2708, std: 10.2532
6/10 trying..  mean: 93.9593, std: 9.20244
7/10 trying..  mean: 93.4631, std: 8.5026
8/10 trying..  mean: 93.1774, std: 7.91327
9/10 trying..  mean: 93.6391, std: 7.53068
10/10 trying..  mean: 93.713, std: 7.10383

sample output meatured in my environment.