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From: Kyle McKay <mackyle@gmail.com>
To: Jonathan Nieder <jrnieder@gmail.com>
Cc: git@vger.kernel.org, David Rothenberger <daveroth@acm.org>,
	Petr Baudis <pasky@ucw.cz>, Daniel Shahaf <danielsh@apache.org>,
	Eric Wong <normalperson@yhbt.net>
Subject: Re: [PATCH 2/2] git-svn: allow git-svn fetching to work using serf
Date: Sat, 6 Jul 2013 19:46:40 -0700	[thread overview]
Message-ID: <3871C226-16AE-4E25-8AD3-007EDAB0E25F@gmail.com> (raw)
In-Reply-To: <20130707022332.GD4193@google.com>

On Jul 6, 2013, at 19:23, Jonathan Nieder wrote:
> Kyle McKay wrote:
>
>> Unless bulk updates are disabled when using the serf access method
>> (the only one available with svn 1.8) for https?: urls,
>> apply_textdelta does indeed get called multiple times in a row
>> without an intervening temp_release.
>
> You mean "Unless bulk updates are enabled" and "without an intervening
> close_file", right?

The problem seems to be skelta mode although it may just be the fact  
that ra_serf has multiple connections outstanding and since ra_neon  
only ever has one it can't happen over ra_neon.

If the server disables bulk updates (SVNAllowBulkUpdates Off) all  
clients are forced to use skelta mode, even ra_neon clients.

> This sounds like something that should be fixed in ra_serf.

Yes, but apparently it will not be.

> But if the number of overlapping open text nodes is bounded by a low
> number, the workaround of using multiple temp files sounds ok as a way
> of dealing with unfixed versions of Subversion.

I believe it will never exceed twice ('svn_delta...' and  
'git_blob...') the maximum number of serf connections allowed.  Four  
by default (hard-coded prior to svn 1.8).  Limited to between 1 and 8  
on svn 1.8.  Actually it looks like from my testing that it won't ever  
exceed twice the (max number of serf connections - 1).

Kyle

  reply	other threads:[~2013-07-07  2:46 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-06  3:44 [PATCH 2/2] git-svn: allow git-svn fetching to work using serf Kyle McKay
2013-07-07  0:24 ` Jonathan Nieder
2013-07-07  2:13   ` Kyle McKay
2013-07-07  2:23     ` Jonathan Nieder
2013-07-07  2:46       ` Kyle McKay [this message]
2013-07-07 13:39         ` Daniel Shahaf
2013-07-07 16:18           ` David Rothenberger
2013-07-07 18:27           ` Kyle McKay

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