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Re: Surely 'bzr branch' shouldn't be this slow?

From: Lennart Borgman
Subject: Re: Surely 'bzr branch' shouldn't be this slow?
Date: Fri, 8 Jan 2010 08:10:07 +0100

On Fri, Jan 8, 2010 at 3:07 AM, Jason Earl <address@hidden> wrote:
> Lennart Borgman <address@hidden> writes:
>> On Thu, Jan 7, 2010 at 10:48 PM, Jason Earl <address@hidden> wrote:
>>> Lennart Borgman <address@hidden> writes:
>>>> On Thu, Jan 7, 2010 at 8:54 PM, Eli Zaretskii <address@hidden> wrote:
>>>>>> From: Lennart Borgman <address@hidden>
>>>>>> Date: Thu, 7 Jan 2010 09:37:15 +0100
>>>>>> Cc: address@hidden
>>>>>> Just a comment: I have not even tried yet to use bzr. According to
>>>>>> what I am reading it looks impossible at the moment.
>>>>>> Am I right or?
>>>>> It's both possible and practical.  I use it on 2 different Windows
>>>>> machines and on 1 GNU/Linux one, and it works quite well.  The initial
>>>>> "bzr branch" takes a long time, but that's all.
>>>> And with a 2Mbit/s connection and an Alan style pc, 1GB RAM?
>>> I use it with a netbook with 1GB of Ram and no swap.  It works fine.  I
>>> will admit that I have switched to pulling from launchpad, but I did my
>>> initial pull from Savannah.
>> How long did the initial pull take on this machine? (Sorry if you have
>> told already. Are the figures perhaps on the wiki?) How fast is your
>> internet?
> Just for fun I did it again into a new repository.  While there were
> times when my netbook struggled, for the most part it appeared that my
> crappy wireless network connection was the bottleneck.
> time bzr branch http://bzr.savannah.gnu.org/r/emacs/trunk/ trunk
> Branched 99273 revision(s).
> real    56m30.346s
> user    34m10.160s
> sys     0m32.638s
> Then I tested to see how long it took to see if there were more
> revisions.  There weren't any.
> time bzr pull
> Using saved parent location: http://bzr.savannah.gnu.org/r/emacs/trunk/
> No revisions to pull.
> real    0m8.109s
> user    0m1.672s
> sys     0m0.272s
> This is on a wireless network.
>> And doing the initial pull from Launchpad instead how much faster is it?
> Launchpad actually took at little longer:
> time bzr pull --remember lp:emacs
> No revisions to pull.
> real    0m10.246s
> user    0m1.108s
> sys     0m0.180s
> The advantage of using launchpad is that you will never get the
> pathologically bad updates where bzr pulls down 100M of data to make 2M
> worth of changes.  The disadvantage is that it is a mirror that updates
> only every 8 hours.

Thanks Jason, very clear and instructive. The road for me at the
moment seems to be Launchpad. The 8 hours does not matter right now,
but the the 100 MB does.

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