From: Ross Lagerwall <rosslagerwall@gmail.com>
Date: Mon, 14 Jan 2013 22:38:00 GMT
Subject: git grep performance regression
Message-ID: <20130114223800.GA12708@hobo.wolfson.cam.ac.uk>

Hi,

I have noticed a performance regression in git grep between v1.8.1 and
v1.8.1.1:

On the kernel tree:
For git 1.8.1:
$ time git grep foodsgsg

real   0m0.158s
user   0m0.290s
sys    0m0.207s

For git 1.8.1.1:
$ time /tmp/g/bin/git grep foodsgsg

real   0m0.501s
user   0m0.707s
sys    0m0.493s


A bisect seems to indicate that it was introduced by 94bc67:
commit 94bc671a1f2e8610de475c2494d2763355a99f65
Author: Jean-Noël AVILA <avila.jn@gmail.com>
Date:   Sat Dec 8 21:04:39 2012 +0100

    Add directory pattern matching to attributes
    
    The manpage of gitattributes says: "The rules how the pattern
    matches paths are the same as in .gitignore files" and the gitignore
    pattern matching has a pattern ending with / for directory matching.
    
    This rule is specifically relevant for the 'export-ignore' rule used
    for git archive.
    
    Signed-off-by: Jean-Noel Avila <jn.avila@free.fr>
    Signed-off-by: Junio C Hamano <gitster@pobox.com>

Regards
-- 
Ross Lagerwall