Anyone able to verify the author's claim? I only get a 2x improvement when switching LANG on Redhat linux on EC2: % export LANG=C % time grep done nohup.out |

Anyone able to verify the author's claim? I only get a 2x improvement when switching LANG on Redhat linux on EC2: % export LANG=C % time grep done nohup.out | wc -l 152929 real 0m0.343s user 0m0.233s sys 0m0.112s % export LANG=en_US.UTF-8 % time grep done nohup.out | wc -l 152931 real 0m0.771s user 0m0.673s sys 0m0.100s % grep --version GNU grep 2.6.3 Author is using grep 2.5.3, I am using 2.6.3, so not testing the same thing.