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Re: AW: Checkout via http/webdav hangs

From: <kmradke_at_rockwellcollins.com>
Date: Tue, 12 Aug 2008 10:21:27 -0500

Jan Bernhardt <j.bernhardt_at_gmx.de> wrote on 08/12/2008 09:52:05 AM:
> thanks for your comments. Unfortunately the entropy is not the culprit.
As for
> the per dir auth I don't think that this is a problem, since the server
is not
> loaded and I suppose it would only show when accessing lots of possibly
small
> files, which is not the case here.

How loaded is the client machine?

Particularly, check the disk I/O on the client. The current working copy
code will do a
tremendous amount of I/O on the client for large working copies with large
numbers of
files. When the client is doing I/O in the working copy, you will see
significant pauses
in the data sent between the client and server.
(Or at least this is what I have observed with 20G+ working copies...)

Kevin R.

> Felix Gilcher wrote:
> >> -----Ursprüngliche Nachricht-----
> >> Von: Jan Bernhardt [mailto:j.bernhardt_at_gmx.de]
> >> Gesendet: Dienstag, 12. August 2008 16:22
> >> An: users_at_subversion.tigris.org
> >> Betreff: Checkout via http/webdav hangs
> >>
> >> Hi,
> >>
> >> I'm running SVN 1.4.2 via an Apache HTTPD 2.0.55 over webdav. This is
on
> >> Solaris 10 SPARC.
> >>
> >> Some checkouts/updates seem to hang. The request in question involve
> >> checking out a directory worth 350 MB. When I look at the Apache
worker
> >> handling my request I see that it accesses the revision in which this
> >> directory was created:
> >>
> >
> > [snipped out traces]
> >
> >> My interpretation is that the process does read the revision
continuesly
> >> and answers back to the client, but very slowly. Checking out via
> >> file:/// access does work.
> >>
> >> Any idea, what's going on here?
> >>
> >
> > Wild guess, as you didn't mention it: Are you checking out via https?
You
> might be running out of entropy. There have been reports of that which
fit
> your description. If yes, you could check whether http does work faster
for you.
> >
> > Another option would be that you're using per-directory access control
[1]
> which can create a big load on the server. You might want to disable
that at
> least for testing purposes [2].
> >
> >> Thanks,
> >>
> >> - Jan.
> >>
> >>
> >
> > Good luck
> >
> > felix
> >
> >
> > [1]
http://svnbook.red-bean.com/nightly/de/svn.serverconfig.httpd.html#svn.
> serverconfig.httpd.authz.perdir
> > [2]
http://svnbook.red-bean.com/nightly/de/svn.serverconfig.httpd.html#svn.
> serverconfig.httpd.authz.pathauthzoff
> >
> > --
> > Felix Gilcher
> >
> > E-Mail: mailto:felix.gilcher_at_exozet.com
> > URL: http://www.exozet.com/
> >
> > Geschäftsführer: Frank Alexander Zahn
> > Handelsregisternummer: HRB 58797 Amtsgericht Charlottenburg
>
>
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Received on 2008-08-12 17:22:31 CEST

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