From: Junio C Hamano <junkio@cox.net>
Date: Mon, 12 Feb 2007 20:53:17 GMT
Subject: Re: Efficiency of initial clone from server
Message-ID: <7vd54f85du.fsf@assigned-by-dhcp.cox.net>
In-Reply-To: <20070212193507.GA18730@thunk.org>

Theodore Tso <tytso@mit.edu> writes:

> Even before we get Git 1.5.0 installed on master.kernel.org (and we
> should really ask hpa to do that), is there a reason we haven't done
> something like this across all of the kernel repo's on
> master.kernel.org?
>
> for i in <list of kernel git repo's on master.kernel.org>
> do
>    pushd $i
>    if [ ! -f objects/info/alternates ]; then
> 	echo /pub/scm/linux/kernel/git/torvalds/linux-2.6.git/objects \
> 	   > objects/info/alternates
> 	git repack -a -d -l
>    fi
>    popd
> done

Perhaps s/<list of kernel git repo's on master.kernel.org>/& minus a few/?

"Minus a few" are (obviously) Linus's repository and bkcvs
historical ones (I think there are two of them).

Other than that I do not think of a major problem.  Repacking
into one would inconvenience http clients but that is not a new
issue and would have happened when the owner of the individual
repository chose to do so anyway.

Older clients do not understand the more efficient packfile
format (delta-base-offset encoding) that can be used with recent
git.  The feature is not turned on by default and is controlled
by configuration repack.usedeltabaseoffset.  Whoever does the
"git repack" above should make sure he does not enable it with
his $HOME/.gitconfig.