From: Junio C Hamano <junkio@cox.net>
Date: Fri, 24 Nov 2006 20:42:26 GMT
Subject: Re: git-svn: why fetching files is so slow
Message-ID: <7vy7q0a85p.fsf@assigned-by-dhcp.cox.net>
In-Reply-To: <20061124203320.GA21654@soma>

Eric Wong <normalperson@yhbt.net> writes:

> Pazu <pazu@pazu.com.br> wrote:
>> Eric Wong <normalperson <at> yhbt.net> writes:
>> 
>> > git-svn transfers full files, and not deltas.  I'll hopefully have a
>> > chance to look into improving the situation for slow links this weekend.
>> 
>> Yes, but why would that make fetching the first revision slower? In this
>> situation, both svn and git-svn would have to fetch full files. Maybe git-svn
>> isn't using gzip compression or http pipelining?
>
> Even for the initial transfer, the tree is bundled into one big delta
> (at least over https).

Do you mean that "one big delta" saves duplicates across copies
inside the tree (e.g. svn tags and branches can be expressed as
a mostly identical copies of each other), or do you mean "one
full file at a time" requests are killing us, compared to a such
single transfer of "one big delta"?