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Re: svn export core dumps

From: Peter Burkholder <peterb_at_ucar.edu>
Date: 2003-07-05 06:06:13 CEST

Hi,

Before I find myself stuck watching this slow down and die, what's a
backtrace and how do I provide that?

On Thu, Jul 03, 2003 at 10:47:42PM -0500, kfogel@collab.net wrote:
> Peter Burkholder <peterb@ucar.edu> writes:
> > The initial import of the tree worked but slowed to a crawl (maybe one or
> > two adds second) while import the "broad" collection.
>
> Hmmm. How long (how many files) did it take to slow to a crawl? Or
> was it slow from the start?

Can't say. I was busy doing other things.
>
> > The command
> > svn export http://svn.dpc.ucar.edu/records/trunk/adn
> > chugged along until:
> >
> > A adn/sercnagt/oai%3Aserc.carleton.edu%3ASERC-NAGT-000-000-000-278.xml
> > A adn/sercnagt/oai%3Aserc.carleton.edu%3ASERC-NAGT-000-000-000-279.xml
> > A adn/broad
> > Segmentation fault (core dumped)
> >
> > The export was stuck on the last Add for about 30 minutes before seg
> > faulting.
>
> Ooooh. That's not good.
>
> Can you get a backtrace?
>
> > Vital stats:
> >
> > Both server and client:
> > BerkeleyDB 4.1
>
> Have you tried with BDB 4.0.14? That's the max we officially support
> right now (heh, not that there's anything "official" about our support
> in any case).

Shall I stay with 4.1 or recompile to 4.0.14 and hope the problem goes away.

>
> > Linux Redhat 7.1
> > svn 0.24.2
> > server
> > httpd 2.0.46
> > client
> > httpd built against 2.1 HEAD (slightly dated)
>
> The svn client doesn't use any httpd code.

Didn't think so, but I was tired and couldn't figure how to focus on the
relevant. Are there other system/environment set up that's of relevance or
interest?
>
> > Is this a bug that needs fixing or am I doing something wrong? Let me know
> > if I can provide more info or tests.
>
> They're certainly bugs (both the import slowness, and the export
> segfault), and yes they need fixing :-).
>
> Is the repository available on the web? Can we try the export
> ourselves?
Not yet public.
>
> Your data set is a good test for us; please be patient while we figure
> out what's happening, it'll pay off in the long run.

I'll hang in there. I'm pretty well seduced by the promise, if not yet the
full reality, of Subversion.

Cheers,

Peter
>
> Thanks,
> -Karl
>
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--
Peter Burkholder, System Administrator
Digital Library for Earth System Education (DLESE -- http://www.dlese.org)
peterb@ucar.edu
DLESE Program Center (DPC)                               ~~~  ~~  ~~~~   __o
UCAR/DPC, P.O. Box 3000       Ph) +1-303-497-2663      ~~~  ~~~~ ~~    _`\<,_
Boulder, CO 80307-3000        Fx) +1 303-497-8336 ~~~~ ~~~   ~~~~     (*)/ (*)
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Received on Sat Jul 5 06:03:54 2003

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