| 1 | # |
|---|
| 2 | # Simple performance test for POSIX-compliant shells |
|---|
| 3 | # |
|---|
| 4 | # Usage: time env -i <shell> shell-perf.sh [<num subshells>] |
|---|
| 5 | # |
|---|
| 6 | # Written by Mathias Lafeldt <mathias.lafeldt@gmail.com> |
|---|
| 7 | |
|---|
| 8 | # for linux OS |
|---|
| 9 | #shell="$(ps -o pid,command | awk "\$1 == $$ { print \$2 }")" |
|---|
| 10 | |
|---|
| 11 | # for OS/2 |
|---|
| 12 | xpid=$(printf %X $$) |
|---|
| 13 | shell="$(pstat /p:$xpid | grep ^$xpid | awk "{ print \$4 }")" |
|---|
| 14 | |
|---|
| 15 | forks=${1:-1000} |
|---|
| 16 | |
|---|
| 17 | echo -n "Forking $forks $shell subshells" |
|---|
| 18 | |
|---|
| 19 | for i in $(seq 1 $forks); do |
|---|
| 20 | "$shell" -c 'echo -n .; j=1; while [ $j -le 1000 ]; do j=$(($j+1)); done' |
|---|
| 21 | done |
|---|
| 22 | |
|---|
| 23 | echo "" |
|---|
