Shorter Benchmark

ssttp.sh

set -eo pipefail

function just_count {
    local -i i=0
    local -i n="$1"

    while test "${i}" -lt "${n}"
    do
        i="$(( i + 1 ))"
    done
}

function count_and_print {
    local -i i=0
    local -i n="$1"

    while test "${i}" -lt "${n}"
    do
        i="$(( i + 1 ))"
        echo "${i}"
    done
}

function count_and_subst {
    local -i i=0
    local -i n="$1"
    local id="$(uuid)"

    while test "${i}" -lt "${n}"
    do
        i="$(( i + 1 ))"
        echo "$(echo "${id}")"
    done
}

function just_read {
    while IFS='' read -r line
    do
        :
    done
}

function read_and_print {
    while IFS='' read -r line
    do
        echo "${line}"
    done
}

function benchmark {
    local -r func="$1"
    time "$@"
}


declare -r size="$1"
echo "Benchmark with size ${size}"
echo "Just Count"
time just_count "${size}"
echo "count_and_print"
time count_and_print "${size}" > /dev/null
echo "count_and_print | just_read"
time count_and_print "${size}" | just_read
echo "count_and_print | read_and_print"
time count_and_print "${size}" | read_and_print > /dev/null
echo "count_and_subst"
time count_and_subst "${size}" > /dev/null