Make grep 50x fasterFound this neat trick in Brendan Gregg's Blazing Performance with Flame Graphs talk. Switching to LANG=C improved performance by 2000x In a quick test I directly got a performance gain of factor 50.22. This is quite an achievement for only changing one environment variable. real:~# du -sh /var/log/querylog 148M /var/log/querylog real:~# time grep -i e /var/log/querylog > /dev/null real 0m12.807s u
