Re: Getting correct tree layout when importing svn repo into git

From: Björn Steinbrink <b.steinbrink@gmx.de>
Date: Sep 17, 2008, 10:56 UTC
Message-ID: <20080917105620.GA13144@atjola.homenet>
In-Reply-To: <cfd18e0f0809170328pb039331m1c4dc42fd398a4d@mail.gmail.com>

On 2008.09.17 03:28:46 -0700, Michael Kerrisk wrote:

Show 27 quoted lines

> Hi Andreas,
> 
> On Tue, Sep 16, 2008 at 11:56 PM, Andreas Ericsson <ae@op5.se> wrote:
> > Michael Kerrisk wrote:
> >>
> >> Hi Dimitry,
> >>
> >> On Tue, Sep 16, 2008 at 6:18 PM, Dmitry Potapov <dpotapov@gmail.com>
> >> wrote:
> >>>
> >>> On Wed, Sep 17, 2008 at 01:40:36AM +0200, Michael Kerrisk wrote:
> >>>>
> >>>> $ git svn init file:///home/mtk/man-pages-rep/ -t tags -T trunk -b
> >>>> branches
> >>>>
> >>>> takes about half an hour to run, the other command (which I already
> >>>> started yesterday) seems to be taking (far) more than a day!
> >>>
> >>> What version of Git do you use?
> >>
> >> 1.5.4.5, on Linux.
> >>
> >
> > An upgrade would do you good.
> 
> But, is it going to make this much difference to the run time?  By
> now, the import using

It should.

Show 13 quoted lines

> $ git svn init file:///home/mtk/man-pages-rep/ -t tags -T
> trunk/man-pages -b branches
> 
> has been running for over 2 days (and I still don't know if it will
> give the layout I want), and seems to be slowing down exponentially as
> it gets further along in the import process, so at this rate it looks
> like it would take several more days to complete, whereas
> 
> $ git svn init file:///home/mtk/man-pages-rep/ -t tags -T trunk -b branches
> 
> which doesn't give the layout I want, takes less than an hour.  We're
> talking about a factor of at least 100 x in the speed difference for
> the two imports.

I guess your old import doesn't see any relations between the trunk and the tags/branches, right? Then the huge increase in runtime would be, at least in part, explained by git-svn searching for ancestry. That you see those tags/1.2.3@123 things also means that the 1.2.3 tags got deleted and recreated, or at least git-svn thinks so. Maybe the ancestry detection goes nuts, hard to tell.

Is that svn repo available anywhere?

Björn