Listing branches with bzr

Listing branches with bzr

[Eli Zaretskii]

Is there a bzr command to show all the branches in the master
repository?  I couldn't find such a command.  "bzr tags" comes the
closest, but it only shows the tags that were used to start each
branch, not the branch names.

Am I missing something?

Re: Listing branches with bzr

[Karl Fogel]

Eli Zaretskii <eliz@gnu.org> writes:
> Is there a bzr command to show all the branches in the master
> repository?  I couldn't find such a command.  "bzr tags" comes the
> closest, but it only shows the tags that were used to start each
> branch, not the branch names.

I don't know of one -- I just use the loggerhead browser for this
(though switching UIs to do a listing is not ideal, of course).

Re: Listing branches with bzr

[Xavier Maillard]

   Eli Zaretskii <eliz@gnu.org> writes:
   > Is there a bzr command to show all the branches in the master
   > repository?  I couldn't find such a command.  "bzr tags" comes the
   > closest, but it only shows the tags that were used to start each
   > branch, not the branch names.

   I don't know of one -- I just use the loggerhead browser for this
   (though switching UIs to do a listing is not ideal, of course).

Isn't 'bzr branches' supposed to achieve such task ?

For example, on my shared repository:

bzr branches ~/repos/dokuwiki-el

administrativia
dokuwiki-mode
fontify-buffer
trunk

Regards

	Xavier
-- 
http://www.gnu.org
http://www.april.org
http://www.lolica.org

Re: Listing branches with bzr

[Jason Earl]

Karl Fogel <kfogel@red-bean.com> writes:

> Eli Zaretskii <eliz@gnu.org> writes:
>> Is there a bzr command to show all the branches in the master
>> repository?  I couldn't find such a command.  "bzr tags" comes the
>> closest, but it only shows the tags that were used to start each
>> branch, not the branch names.
>
> I don't know of one -- I just use the loggerhead browser for this
> (though switching UIs to do a listing is not ideal, of course).

To my surprise:

bzr branches http://bzr.savannah.gnu.org/r/emacs/

works.  I thought this command needed a smart server, but apparently
not.  It is part of the bzrtools plugins package.

It might be faster to fire up a web browser and take a look at
loggerhead though.  On my netbook the above command takes 1 minute 44
seconds, on a fairly well connected network.

Jason

Re: Listing branches with bzr

[Lennart Borgman]

On Tue, Dec 1, 2009 at 11:20 PM, Jason Earl <jearl@notengoamigos.org> wrote:
> Karl Fogel <kfogel@red-bean.com> writes:
>
>> Eli Zaretskii <eliz@gnu.org> writes:
>>> Is there a bzr command to show all the branches in the master
>>> repository?  I couldn't find such a command.  "bzr tags" comes the
>>> closest, but it only shows the tags that were used to start each
>>> branch, not the branch names.
>>
>> I don't know of one -- I just use the loggerhead browser for this
>> (though switching UIs to do a listing is not ideal, of course).
>
> To my surprise:
>
> bzr branches http://bzr.savannah.gnu.org/r/emacs/
>
> works.  I thought this command needed a smart server, but apparently
> not.  It is part of the bzrtools plugins package.
>
> It might be faster to fire up a web browser and take a look at
> loggerhead though.  On my netbook the above command takes 1 minute 44
> seconds, on a fairly well connected network.


Is that a bug, or?

Re: Listing branches with bzr

[Óscar Fuentes]

Lennart Borgman <lennart.borgman@gmail.com> writes:

> On Tue, Dec 1, 2009 at 11:20 PM, Jason Earl <jearl@notengoamigos.org> wrote:
>> To my surprise:
>>
>> bzr branches http://bzr.savannah.gnu.org/r/emacs/
>>
>> works.  I thought this command needed a smart server, but apparently
>> not.  It is part of the bzrtools plugins package.
>>
>> It might be faster to fire up a web browser and take a look at
>> loggerhead though.  On my netbook the above command takes 1 minute 44
>> seconds, on a fairly well connected network.
>
> Is that a bug, or?

Not a bug AFAIK, just slow. For me it takes about 5 minutes.

-- 
Óscar

Re: Listing branches with bzr

[Lennart Borgman]

On Wed, Dec 2, 2009 at 3:13 AM, Óscar Fuentes <ofv@wanadoo.es> wrote:
> Lennart Borgman <lennart.borgman@gmail.com> writes:
>
>> On Tue, Dec 1, 2009 at 11:20 PM, Jason Earl <jearl@notengoamigos.org> wrote:
>>> To my surprise:
>>>
>>> bzr branches http://bzr.savannah.gnu.org/r/emacs/
>>>
>>> works.  I thought this command needed a smart server, but apparently
>>> not.  It is part of the bzrtools plugins package.
>>>
>>> It might be faster to fire up a web browser and take a look at
>>> loggerhead though.  On my netbook the above command takes 1 minute 44
>>> seconds, on a fairly well connected network.
>>
>> Is that a bug, or?
>
> Not a bug AFAIK, just slow. For me it takes about 5 minutes.


Isn't it doing the same work as on the server? Is it the network
traffic that makes it so incredibly slow?

I am thinking about Stephens reply (which I have not had time to
respond to). He mentioned that git uses SHA to identify files why bzr
does not do that? Is that the cause of the time trouble we are seeing?

I would consider that just as serious as a bug. But maybe there is
something I do not understand there.

Re: Listing branches with bzr

[Óscar Fuentes]

Lennart Borgman <lennart.borgman@gmail.com> writes:

>>>> bzr branches http://bzr.savannah.gnu.org/r/emacs/
>>>
>>> Is that a bug, or?
>>
>> Not a bug AFAIK, just slow. For me it takes about 5 minutes.
>
>
> Isn't it doing the same work as on the server? Is it the network
> traffic that makes it so incredibly slow?

Possibly the operation is very chatty.

> I am thinking about Stephens reply (which I have not had time to
> respond to). He mentioned that git uses SHA to identify files why bzr
> does not do that? Is that the cause of the time trouble we are seeing?

I don't think so.

> I would consider that just as serious as a bug. But maybe there is
> something I do not understand there.

The `branches' command is implemented by the bzrtools plugin, so it
can't be considered a bug, or even a perfomance issue, on Bazaar proper.

Bazaar has a plugin architecture which makes very easy to add
functionality to it (in Python). There are some impressive plugins, like
my favorite, bzr-svn, which IMO turns bzr into a better Subversion
client than svn itself.

-- 
Óscar

Re: Listing branches with bzr

[Stephen J. Turnbull]

Lennart Borgman writes:

 > Isn't it doing the same work as on the server?

Yes.

 > Is it the network traffic that makes it so incredibly slow?

Yes.  What you are seeing is bzr using algorithms designed on the
assumption that files are local on each individual file via HTTP.

 > I am thinking about Stephens reply (which I have not had time to
 > respond to). He mentioned that git uses SHA to identify files why bzr
 > does not do that? Is that the cause of the time trouble we are seeing?

As I wrote before, bzr uses a way to identify files that makes
tracking file and directory renames precise and efficient (in git
there is some imprecision and much slower).  For most other purposes,
the bzr file-tracking method and the git content-tracking method lead
to equivalent results with varying degrees of efficiency.  For a few
things git is quite a bit faster, but bzr is not unusable.

In any case it is not the cause of this slowdown.  The cause here
slowdown is that many files are being downloaded by HTTP, and this
would be also be true to some extent for git.  The big difference is
that for some reason Savannah admins think that use of git's smart
server is acceptable, security-wise, but they don't like bzr's.
Hopefully that can be changed soon, but to get things done in time for
the Emacs VCS switch probably only a request from Richard will do.
The Savannah admins don't currently consider installation of the smart
server a high priority (there's an open SR, and they've explicitly
said, "not now, and not soon").

 > I would consider that just as serious as a bug. But maybe there is
 > something I do not understand there.

There is.  Don't worry about it.  This is an administrative problem,
not a technical deficiency in bzr.[1]  Stefan and Karl are on this,
and they're getting help on the technical details that the Savannah
hackers need to know from senior bzr developers.  And you'll soak up
the technical knowledge as you use bzr; it's not something you need to
know to get started.



Footnotes: 
[1]  Unless you consider having *both* a smart, efficient server and a
very easy way for any Joe Hacker with a home page to give others
access to his bzr branch a bad thing. :-)

Re: Listing branches with bzr

[Eli Zaretskii]

> From: Jason Earl <jearl@notengoamigos.org>
> Cc: Eli Zaretskii <eliz@gnu.org>,  emacs-devel@gnu.org
> Date: Tue, 01 Dec 2009 15:20:39 -0700
> 
> To my surprise:
> 
> bzr branches http://bzr.savannah.gnu.org/r/emacs/
> 
> works.

It does, thanks.  Although, unlike other commands I used till now, it
doesn't use the saved location by default, even if I invoke it from
the parent of the local trunk/ tree.  I needed to specify the sftp URL
explicitly, otherwise it shows only the local branches.

> On my netbook the above command takes 1 minute 44 seconds, on a
> fairly well connected network.

Lucky you.  My connection is also fast, but it took 7 minutes here.
I'm not going to care about that, though: this command is needed maybe
once a month or so.

Re: Listing branches with bzr

[Martin Albisetti]

On Wed, Dec 2, 2009 at 3:21 AM, Eli Zaretskii <eliz@gnu.org> wrote:
>> On my netbook the above command takes 1 minute 44 seconds, on a
>> fairly well connected network.
>
> Lucky you.  My connection is also fast, but it took 7 minutes here.
> I'm not going to care about that, though: this command is needed maybe
> once a month or so.

In that case, why not just set up a loggerhead instance on the server?
It would bring it down to a few seconds!  :)


-- 
Martin

Re: Listing branches with bzr

[Stefan Monnier]

> Is there a bzr command to show all the branches in the master repository?

I don't know of any.  You can get this info via sftp or via launchpad,
but it seems to be missing from bzr itself.


        Stefan

Re: Listing branches with bzr

[Dan Nicolaescu]

Eli Zaretskii <eliz@gnu.org> writes:

  > Is there a bzr command to show all the branches in the master
  > repository?  I couldn't find such a command.  "bzr tags" comes the
  > closest, but it only shows the tags that were used to start each
  > branch, not the branch names.

If you find a command/set of commands that do this, then we can add a
vc-bzr function to do it, and bind it to the vc and vc-dir menu.

Re: Listing branches with bzr

[Eli Zaretskii]

> Date: Tue, 1 Dec 2009 14:00:29 -0800 (PST)
> From: Dan Nicolaescu <dann@ics.uci.edu>
> Cc: emacs-devel@gnu.org
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
>   > Is there a bzr command to show all the branches in the master
>   > repository?  I couldn't find such a command.  "bzr tags" comes the
>   > closest, but it only shows the tags that were used to start each
>   > branch, not the branch names.
> 
> If you find a command/set of commands that do this, then we can add a
> vc-bzr function to do it, and bind it to the vc and vc-dir menu.

Seems like "bzr branches" is it, although I didn't yet try it.

Re: Listing branches with bzr

[Xavier Maillard]

   > Date: Tue, 1 Dec 2009 14:00:29 -0800 (PST)
   > From: Dan Nicolaescu <dann@ics.uci.edu>
   > Cc: emacs-devel@gnu.org
   > 
   > Eli Zaretskii <eliz@gnu.org> writes:
   > 
   >   > Is there a bzr command to show all the branches in the master
   >   > repository?  I couldn't find such a command.  "bzr tags" comes the
   >   > closest, but it only shows the tags that were used to start each
   >   > branch, not the branch names.
   > 
   > If you find a command/set of commands that do this, then we can add a
   > vc-bzr function to do it, and bind it to the vc and vc-dir menu.

   Seems like "bzr branches" is it, although I didn't yet try it.

Note that this command is not part of the default GNU Bazaar
distribution but is in the bzrtools package.


	Xavier
-- 
http://www.gnu.org
http://www.april.org
http://www.lolica.org

Re: Listing branches with bzr

[Eli Zaretskii]

> Date: Thu, 3 Dec 2009 00:24:24 +0100
> From: Xavier Maillard <xma@gnu.org>
> CC: dann@ics.uci.edu, emacs-devel@gnu.org
> Jabber-ID: xavier@maillard.im
> 
> 
>    > Date: Tue, 1 Dec 2009 14:00:29 -0800 (PST)
>    > From: Dan Nicolaescu <dann@ics.uci.edu>
>    > Cc: emacs-devel@gnu.org
>    > 
>    > Eli Zaretskii <eliz@gnu.org> writes:
>    > 
>    >   > Is there a bzr command to show all the branches in the master
>    >   > repository?  I couldn't find such a command.  "bzr tags" comes the
>    >   > closest, but it only shows the tags that were used to start each
>    >   > branch, not the branch names.
>    > 
>    > If you find a command/set of commands that do this, then we can add a
>    > vc-bzr function to do it, and bind it to the vc and vc-dir menu.
> 
>    Seems like "bzr branches" is it, although I didn't yet try it.
> 
> Note that this command is not part of the default GNU Bazaar
> distribution but is in the bzrtools package.

Yes, I understand.  But bzrtools is generally considered as a
must-have; e.g., the Windows installer installs it by default.

Perhaps VC Mode should suggest installing it if the command brings an
error, though.

Re: Listing branches with bzr

[Alexander Belchenko]

Eli Zaretskii пишет:
> Is there a bzr command to show all the branches in the master
> repository?  I couldn't find such a command.  "bzr tags" comes the
> closest, but it only shows the tags that were used to start each
> branch, not the branch names.

Use `bzr branches` command from bzrtools plugin.