On Sat, Jan 5, 2019 at 12:12 PM Eduardo A. Bustamante López <dual...@gmail.com> wrote: (...) > 2. Performance impact > > The new RNG does more work, and thus, it is expected to have a performance > impact when generating lots of random numbers. I tested 3 systems (2 amd64 > and 1 > armhf) and include the results below. > > > AMD Ryzen 7 2700X: > > | dualbus@system76-pc:~/src/gnu/bash$ (set -x; lscpu; for bash in /bin/bash > ./bash; do "$bash" ~/test-speed.sh; echo; done) > | + lscpu (...)
Oops, I forgot to attach the test-speed script, it's fairly simple: | #!/bin/bash | | iterations=1000000 | | TIMEFORMAT='time: %R' | | echo "iterations: $iterations" | echo "BASH_VERSION: $BASH_VERSION" | | RANDOM=1 | time for ((i=0; i<iterations; i++)); do | : "$RANDOM" | done
