[Bug 254763] grep very slow with 13.0-RC4

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 09 Aug 2021 06:26:00 UTC

Rihad <rihad@mail.ru> changed:

           What    |Removed                     |Added
                 CC|                            |rihad@mail.ru

--- Comment #10 from Rihad <rihad@mail.ru> ---
Same issue here.

grep -vE -f whitelist.re /path/to/nginx-access.log

Whitelist.re is a huge compiled exclusion list. In the form:
^(128\.177\.243\.|128\.177\.244\.100 | etc. etc.)

This was done in about 5 seconds with a pretty large access.log in FreeBSD 11.4
Still not finished after 30 minutes on FreeBSD 13.0.

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