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[bug #15023] Excessive uploading when updating from remote repositories

From: Martin Stjernholm
Subject: [bug #15023] Excessive uploading when updating from remote repositories
Date: Mon, 21 Nov 2005 03:01:07 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20051010 Firefox/1.0.7 (Ubuntu package 1.0.7)


                 Summary: Excessive uploading when updating from remote
                 Project: Concurrent Versions System
            Submitted by: mast
            Submitted on: Mon 11/21/05 at 03:01
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
           Fixed Release: None
   Fixed Feature Release: None



This is more a misfeature than a bug, but it can still hit pretty hard:

I'm updating a fairly large repository against a remote server using the
:ext: method over an 512/128 ADSL line. The update takes a very long time,
and using strace I discovered that the client apparently uploads every
modified file to the server, presumably to compare it to the repository
version on the server side.

This is very unfortunate over asymmetric connections - it'd be a lot better
if the modified files were downloaded to the client and compared there
instead. (I figure that could also reduce the total network traffic quite a
lot too since a merged version can be produced on the client without
additional data from the server.)

The cvs client version is 1.12.9. The version on the server is unknown but
it's the one currently (Nov 21 2005) in use at subversions.gnu.org.


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