OK. Here is a simple test case:
X=100000 while [ $X -gt 0 ] ; do echo "The quick brown fox jumped over the lazy dog" ; let X=X-1; done > testfile time grep dog testfile | wc Cygwin 1.5: real 0m0.219s user 0m0.232s sys 0m0.045s Cygwin 1.7: real 7m46.575s user 7m14.138s sys 0m0.076s While using sed on Cygwin 1.5, I get the reasonable result: time sed -ne /dog/p testfile | wc real 0m1.229s user 0m1.202s sys 0m0.046s -- View this message in context: http://old.nabble.com/1.7--BUG---GREP-slows-to-a-crawl-with-large-number-of-matches-on-a-single-file-tp26224019p26226567.html Sent from the Cygwin list mailing list archive at Nabble.com. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple