Re: Git benchmark - comparison with Bazaar, Darcs, Git and Mercurial

From: Alex Riesen <raa.lkml@gmail.com>
Date: Aug 1, 2007, 13:20 UTC
Message-ID: <81b0412b0708010620h6bf44aarb35da301db967855@mail.gmail.com>
In-Reply-To: <7vr6mn5znm.fsf@assigned-by-dhcp.cox.net>

On 8/1/07, Junio C Hamano <gitster@pobox.com> wrote:

Show 9 quoted lines

> Theodore Tso <tytso@mit.edu> writes:
> > So would you accept a patch which adds a git-config variable which
> > specifies whether or not local clones should use hard links by default
> > (defaulting to yes), and which adds a --no-hard-links option to
> > git-clone to override the config option?
>
> Are you suggesting to make -l the default for local, in other
> words?  I personally do not make local clone often enough that I
> am not disturbed having to type extra " -l" on the command line.

...as long as the underlying filesystem _supports_ hardlinks.

BTW, we need a warning when falling back to normal copy, if git-clone -l is used. The user _asked_ for a hard-linked clone, but silently got something else. Something like this:

diff --git a/git-clone.sh b/git-clone.sh
index 0922554..a744f5b 100755
--- a/git-clone.sh
+++ b/git-clone.sh
@@ -266,6 +266,7 @@ yes,yes)
 	    l=
 	    if ln "$repo/$sample_file" "$GIT_DIR/objects/sample" 2>/dev/null
 	    then
+		    echo >&2 "Hardlinks not supported. Falling back to copy"
 		    l=l
 	    fi &&
 	    rm -f "$GIT_DIR/objects/sample" &&