I wrote a tiny grep with multi-line match support, and compared its speed under pypy 1.7 with grep and CPython 2.7.1 (on ubuntu 11.04 laptop). No special algorithm/implementation is employed; it is bare re module.
input: Plone 4.1.2 eggs directory, size 286mb, possible processed input size is about 75mb, processed 3958 files total commands: time mgrp -lcrN '\.py$' for . takes 1.95s time python2.7 /usr/local/bin/mgrp -lcrN '\.py$' for . takes 1.45s time grep -lcr --color=none --include='*.py' for . takes 0.6s Is the input too small to see the benefits of pypy?
mgrp
Description: Binary data
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