slow ssh login on a cygwin machine

Larry Hall (Cygwin)
Wed Aug 29 20:42:00 GMT 2012

On 8/29/2012 3:43 PM, bbcolo22 wrote:
> I am having exactly the same problem that Ilya described. The problem
> appeared out of nowhere 1 week ago on many (but not all) of our production
> servers running COPSSH. No errors, but an SSH login that used to take 3-5
> seconds now takes > 90 seconds. I can clear see a delay of exactly 45
> seconds here:
> ...
> debug1: Trying private key: /home/dbmsmonitor/.ssh/id_rsa
> debug3: no such identity: /home/dbmsmonitor/.ssh/id_rsa
> debug1: Offering DSA public key: /home/dbmsmonitor/.ssh/id_dsa
> debug3: send_pubkey_test
> debug2: we sent a publickey packet, wait for reply
> (45 second delay).
> ... followed by a shorter, second delay at the same place the Ilya
> described.
> Not all of our production servers (running COPSSH on Windows) have the
> problem, but even rebooting a server can make the problem appear. I've
> tried:
> - Different SSH clients (ssh, putty, etc.).
> - Changing SSHD_CONFIG options. including turning off DNS (I can see that it
> gets past the DNS lookup OK).
> - Specifying many of the SSH -o client options.
> - Reinstalling COPSSH.
> Any ideas? I'm desperate. :@(

You'll really want to talk to the COPSSH folks about this.  Despite my
off-hand suggestion of BLODA above, we don't support COPSSH here.  If
the comment helps, great.  Otherwise, see COPSSH authors for support.



A: Yes.
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