OpenSSH (CVS) performance observations

[Markus Friedl]

yes, i can verify that SSH2_MSG_KEX_DH_GEX_GROUP is slow,
but it should spend all the time in openssl (or waiting
for the peer).

On Mon, Feb 12, 2001 at 04:15:11PM +0100, Lutz Jaenicke wrote:
> Hi!
> 
> I have experimented a bit with the latest OpenSSH from the CVS archive.
> I could realize some connections succesfully, but I experienced performance
> problem during the connection phase.
> It seems, that the client needs quite some computer time just after
> debug: Got SSH2_MSG_KEX_DH_GEX_GROUP.
> By inserting test-printouts, I verifyed that the dh_gen_key(dh); call
> seems to take that long. On a HP C180 it takes around 8 seconds.
> OpenSSH is built without optimization but as far as I could see, the
> time is spent in the OpenSSL library (built with maximum optimization).
> There are other places in which 3-4 seconds are spent each.
> 
> Can somebody verify these observations?
> Setup is the default setting.
> 
> Best regards,
> 	Lutz
> -- 
> Lutz Jaenicke                             Lutz.Jaenicke at aet.TU-Cottbus.DE
> BTU Cottbus               http://www.aet.TU-Cottbus.DE/personen/jaenicke/
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>