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From "Butler, Stephen" <Stephen.But...@hamburgsud.com>
Subject RE: Subversion 1.8 freezes during long updates
Date Wed, 02 Jul 2014 13:05:25 GMT
> -----Original Message-----
> From: Ivan Zhakov [mailto:ivan@visualsvn.com] 
> Sent: Wednesday, July 02, 2014 14:31
> To: Butler, Stephen
> Cc: users@subversion.apache.org
> Subject: Re: Subversion 1.8 freezes during long updates
> 
> On 1 July 2014 21:45, Butler, Stephen <Stephen.Butler@hamburgsud.com> wrote:
> > Hi folks,
> >
> > I'm trying to help users in our corporate network.  They currently
> > use Subversion 1.7 + neon (via TortoiseSVN) because of errors in
> > checkout/update using Subversion 1.8.  During a long checkout or 
> > update, TortoiseSVN 1.8 freezes after downloading a few hundred MBs
> > of data.  The svn command-line client does the same.
> >
> > To get more information, I compiled Subversion (within the 
> > TortoiseSVN branches/1.8.x tree) with serf tracing turned up to eleven 
> > (SSL_MSG_VERBOSE, etc).   Then the errors no longer occur!  Apparently
> > the extra output changes the timing somehow.  But performance is of
> > course very bad.  Less tracing recreates the errors, but without
> > revealing a smoking gun.
> >
> > I attached the Visual Studio debugger to a frozen cmdline client.  It 
> > seemed to be looping through impl_pollset_poll (in apr/poll/unix/select.c)
> > without receiving anything.
> >
> > On the Subversion server, the last message in the Apache access log is a
> > successful file download (matching the last line of client output).  The 
> > Apache error log had nothing new.  The network has lots of firewalls and 
> > transparent proxies, as was the case in a problem that Branko recently
> > solved:
> >
> >     
> > http://mail-archives.apache.org/mod_mbox/subversion-users/201401.mbox/
> > %3C52D6D944.8060308%40wandisco.com%3E
> >
> > Should I try to corner the network admins, or is there a client/server
> > troubleshooting step I've overlooked?
> >
> > Thanks for any insights,
> >
> Hi Steve,
> 
> 1. Does the issue reproduce if you force bulk updates using 
> '--config-option=servers:global:http-bulk-updates=yes' command line option
> or 'SVNAllowBulkUpdates prefer' on the server side?

Setting either option seems to solve the problem completely.  I should have
read the release notes more carefully!

> 
> 2. Do you have antivirus installed on client computers?

FWIW, yes, but in this case it was "mostly harmless".

> 
> --
> Ivan Zhakov


Thank you,

Steve Butler
_____________________________________________
Hamburg S├╝damerikanische Dampfschifffarts-Gesellschaft KG
Registered Office: Hamburg, Germany
Commercial Register: Amtsgericht Hamburg HRA 59448

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