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RE: Slow initial repo access (https method)

From: Matthew Fletcher <MFletcher_at_serck-controls.co.uk>
Date: Thu, 21 Apr 2011 09:54:44 +0100

Hi,

Nothing as fancy as LDAP, just a basic file.

  AuthType Basic
  AuthBasicProvider file

I wonder if it could be due to DNS name lookup issues,

http://old.nabble.com/Using-SSL-between-Apache-proxy-and-Synapse-causes-consistent-10-second-delay-in-SSL-handshake-td16014406.html

"Check if reverse DNS lookups are the same for both production and
stating/integration. The 10 second delays are usually caused by reverse
lookups when accepting connections, since we try to get the hostname for logging."

I will look into that.

regards

Matthew
 
 

> -----Original Message-----
> From: Daniel Shahaf [mailto:d.s_at_daniel.shahaf.name]
> Sent: 21 April 2011 09:49
> To: Matthew Fletcher; users_at_subversion.apache.org
> Subject: RE: Slow initial repo access (https method)
>
> The problem may be not openssl but rather your authentication
> backend (as configured in httpd.conf). For example, if you
> use LDAP authentication and your LDAP server is slow to
> respond, that could account for some seconds' difference.
>
> On Thu, 21 Apr 2011 09:44 +0100, "Matthew Fletcher"
> <MFletcher_at_serck-controls.co.uk> wrote:
> >
> > Thanks for the info, enabling apache logging i can see
> where the pause is comming from,. its between the inital
> client connection and granting the access rights to my user.
> A full 15 seconds ! This is a fast quad core xeon server as well.
> >
> > [Thu Apr 21 09:32:30 2011] [info] Connection: Client IP:
> > 10.141.81.134, Protocol: TLSv1, Cipher: DHE-RSA-AES256-SHA (256/256
> > bits) [Thu Apr 21 09:32:45 2011] [info] [client
> 10.141.81.134] Access
> > granted: 'MFletcher' OPTIONS Play:/
> >
> > How do i go about finding out why its taking so long to do
> the inital https / SSL stuff before granting access ? I
> realise this crosses the boundary between SVN/apache/OpenSSL
> so it might be tricky.
> >
> >
> > regards,
> >
> > Matthew
> >
> >
> >
> > > -----Original Message-----
> > > From: Daniel Shahaf [mailto:d.s_at_daniel.shahaf.name]
> > > Sent: 20 April 2011 18:21
> > > To: Matthew Fletcher; users_at_subversion.apache.org
> > > Subject: Re: Slow initial repo access (https method)
> > >
> > >
> > >
> > > On Wed, 20 Apr 2011 14:06 +0100, "Matthew Fletcher"
> > > <MFletcher_at_serck-controls.co.uk> wrote:
> > > > Hi,
> > > >
> > > > We are using svn 1.6.16 on the server and have noticed that
> > > there is a large pause in the inital https requests, (snip of
> > > wireshark shown bellow). Basically it looks like this is a server
> > > side issue but i am not sure where to look for logs (apache ?).
> > >
> > > I'd firstly try to understand what the two packets are on either
> > > side of the large pause. So...
> > >
> > > * A dev who knows the protocol might be able to tell what those
> > > packets are without even looking at your data;
> > > * You might be able to decrypt the packets you posted;
> > > * You might be able to reproduce the problem with non-ssl
> > > connections;
> > > * You might be able to log the packets before they get
> encrypted (or
> > > after decrypted).
> > >
> >
> >
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> > Tel: +44 (0) 24 7630 5050 Fax: +44 (0) 24 7630 2437
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> >
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Received on 2011-04-21 10:55:04 CEST

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