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Re: (no subject)

From: Richard Stallman
Subject: Re: (no subject)
Date: Mon, 18 Oct 2010 02:26:56 -0400

    Well, I'm only doing `bzr pull', and it seems indeed to be more
    responsive than previously.  However, the amount of data transferred
    by bzr is still excessively large.  For example, updating from
    rev. 101894 (Oct. 10th) to today's rev. 101979 (with `bzr pull') used
    more than 20MByte!  Looking at the amount of changes actually applied
    to the repository, I estimate that git would need only approx. 200 to
    300kByte   this is 70 to 100 times less...

    It would be great if someone using an emacs git repository could
    verify my estimation.

It would be interesting to set up parallel repositories, the latest
bzr and git, and update them at the same times.  Then it would be
possible to rigorously compare the amount of data transferred.

    git compresses the data on the remote side before transferring it.
    Does bzr omit that step?  Maybe I'm missing a bzr option?

It might be that the compression occurs in scp, and you're measuring
the amount of raw data rather than the amount actually transmitted.

But that's just a speculation.  It would be interesting to find out
for certain.

Richard Stallman
President, Free Software Foundation
51 Franklin St
Boston MA 02110
www.fsf.org, www.gnu.org

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