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Mail Archives: cygwin/2009/02/20/12:10:10

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Date: Fri, 20 Feb 2009 18:09:47 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: SSH V.5.1 with Cygwin1.dll 1.7.0: Very large logon times...
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On Feb 20 16:20, Corinna Vinschen wrote:
> On Feb 20 15:48, Carsten DOT Porzler AT spb DOT de wrote:
> > It ist very difficult to put in debug statements at the right places 
> > within the sourcecode because of the complexity of the programs.
> > 
> > But we have just found out these new facts:
> > 
> > - We copied our productive Active Directory database into a test 
> > environment
> >         + AD database contained 8700 users, 6000 groups, 9600 computers
> >         + part of this test network are only three computers: root domain 
> > controller, domain controller, member server
> >         + problem of large logon time could also be seen in this copied 
> > environment
> > 
> > - In the next step we deleted most of the Active Directory objects
> >         + After this deletion process AD database contains only 278 users, 
> > 784 groups and 32 computers
> >         + SSH login takes only 1 sec. for login
> > 
> > With theses informations it should be possible for you developers to 
> > adjust the situation. Increase the number of your Active Directory 
> > objects, and you will probably see that the logon time will also increase!
> > 
> > Anything within your ssh logon process takes more time the bigger the 
> > Active Directory database is.
> 
> I just discussed this problem and my code with somebody having more
> insight into this AD stuff.  I now have a hunch what I could do to
> fix this bad timing problem.  Stay tuned.

Please try the latest 1.7.0 incarnation:

  http://cygwin.com/ml/cygwin-announce/2009-02/msg00018.html

This hopefully fixes the above problem.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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