On 02/19/2014 06:22 AM, Norihiro Tanaka wrote:
I tested performance on grep-2.17 and the version which the patch is reverted. Latter is 100x faster.
While we're on the topic, can someone please say why that patch was done as a preprocessor for the regex code? I normally would think that the way to speed up regex processing is to improve dfa.c and/or the regex library, as that should speed up all programs that use these modules, not just grep.
