On 6/6/2022 8:26 AM, Gordon Grimes via Cygwin wrote:
Hi,
I wanted to let you know about a possible issue I found in grep v3.7. I run
Cygwin and recently downgraded ‘grep’ to v3.6 from v3.7 to address a
performance issue (shown below).
I just thought you’d want to know (V3.6 is working well, so I’m in a good
place 😊 )
Enjoy,
-g-
% time echo hi | grep h
hi
real 0m7.442s
user 0m0.030s
sys 0m6.576s
% /usr/bin/grep --version
grep (GNU grep) 3.7
Packaged by Cygwin (3.7-2)
Copyright (C) 2021 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later https://gnu.org/licenses/gpl.html.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Mike Haertel and others; see
https://git.sv.gnu.org/cgit/grep.git/tree/AUTHORS.
After the downgrade…
% time echo hi | grep h
hi
real 0m0.292s
user 0m0.015s
sys 0m0.124s
I'm running 3.7-2 and get timing similar to what you give
for 3.6:
real 0m0.167s
user 0m0.015s
sys 0m0.061s
Not sure what to say unless, if I downgraded, it would be
an order of magnitude faster ...
I wonder if maybe the new version triggers some anti-virus
activity or something like that.
Eliot Moss
--
Problem reports: https://cygwin.com/problems.html
FAQ: https://cygwin.com/faq/
Documentation: https://cygwin.com/docs.html
Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
