On my extremely old desktop PC (Phenom II 550) running an out-of-date OS (Slackware 14.2): Bash: while :; do printf "1"; done | ./pv > /dev/null [ 15

On my extremely old desktop PC (Phenom II 550) running an out-of-date OS (Slackware 14.2): Bash: while :; do printf "1"; done | ./pv > /dev/null [ 156KiB/s] Python3 3.7.2: python3 -c 'while (1): print (1, end="")' | ./pv > /dev/null [1,02MiB/s] Perl 5.22.2: perl -e 'while (true) {print 1}' | ./pv > /dev/null [3,03MiB/s] Node.js v12.22.1: node -e 'while (1) process.stdout.write("1");' | ./pv > /dev/null [ 482KiB/s]