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RE: Significant checkout performance degradation between 1.6.1 and 1.7b2

From: Ketting, Michael <michael.ketting_at_rubicon.eu>
Date: Tue, 9 Aug 2011 12:49:32 +0000

Hi Mark!

Yes, I'm using HTTP. Well, HTTPS, but from the rest of your response, that looks like a minor detail.

This tidbit about the library is interesting news. I just did a bit of mailing-list research on this subject.
How do I switch the library? Is there a command line option or a config-setting for this?
I'm using the precompiled version from collabnet, and have never actually compiled subversion myself.

Regards, Michael

> -----Original Message-----
> From: Mark Phippard [mailto:markphip_at_gmail.com]
> Sent: Dienstag, 09. August 2011 14:08
> To: Ketting, Michael
> Cc: dev_at_subversion.apache.org
> Subject: Re: Significant checkout performance degradation between 1.6.1
> and 1.7b2
>
> Is this via http? Given that export is slower I'd be willing to bet the
> performance difference is from the new http client library - serf. It is
> typically slower than Neon. Try switching to neon and run it again.
>
> Sent from my iPhone
>
> On Aug 9, 2011, at 4:13 AM, "Ketting, Michael"
> <michael.ketting_at_rubicon.eu> wrote:
>
> > Hello!
> >
> > I've recently picked up the subversion 1.7 beta 2 build (included in the
> latest TortoiseSVN beta) and did a checkout of our solution (~10,000 files,
> ~2,000 folders, ~180MB).
> > With Subversion 1.6.1, it takes roughly 5 minutes, with Subversion 1.7 beta
> 2, it takes about 10 minutes.
> >
> > Is this performance degradation inherent with the use of the centralized
> SVN information, and thus an intentional tradeoff for the blazing fast
> Commits/Updates?
> > Naively, I'd hoped that the checkout speed would get closer to the export-
> speed with Subversion 1.7, since the Updates are faster, too.
> >
> > Interestingly, it looks like the export speed also degraded. With
> Subversion 1.6 it took about 90 seconds, with Subversion 1.7, it now takes
> 110 seconds.
> >
> > Regards, Michael
Received on 2011-08-09 17:46:48 CEST

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