bzr push so slow... why?

Robert Collins robertc at
Tue Sep 11 02:55:49 BST 2007

On Tue, 2007-09-11 at 02:30 +0700, Hendy Irawan wrote:
> I deleted the branch from Launchpad (not something that I'd do on  a 
> daily basis, I guess...)
> And tried re-pushing again..
> rainbow at luther [~/tmp/bukuruby_bzr]# ~/bzr_dev/bzr-0.90/bzr push 
> s 
> --create-prefix -v
> | 
> [========================================                                          
> ] Fetch phase 1/4
> It has been like this for about half an hour already......... I wonder 
> why???

The current disk format imposes a high latency cost. You'll pay 6 times
the round trip time to for every file you have

We are fixing this, in the 0.92 release we hope to have a format that
will do about 12 round trips total for an initial push, which will be
supported (but not default for compatibility). Also in 0.92 we should
have improved bzr+ssh support that will do a similarly small number of
round trips and stream the data.

Both of these things should give a massive performance boost for 0.92.

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