ssh speed

[Markus Friedl]

On Wed, Jan 10, 2001 at 10:37:35AM +0100, Markus Friedl wrote:
> did you use compression?

oops, i should read the all of the mail.

what did you do? scp? ssh+cat? sftp? http over forwarded
channels?

what are exact version of openssh? openssh-current? did you try AES?

what kind of network? CPU? transfer to localhost?

did you really use 'none' in SSH-2? did you hack the source (cipher none 
should not be supported)?

-markus

> On Tue, Jan 09, 2001 at 06:28:10PM -0500, Rob Hagopian wrote:
> > OK, I've been looking to run ssh2 without encryption to get maximum
> > throughput but with secure authentication. However, my tests show that the
> > performance speedup isn't as dramatic as I suspected:
> > 
> > For a 587MB file:
> > 3des-cbc	3:03
> > arcfour		2:10
> > none		2:13
> > 
> > ftp		0:57
> > 
> > I checked, compression is off (with it on estimated times were over 5min).
> > 
> > I interpret the above as saying that the cipher does make a difference,
> > but when using a sufficiently fast cipher there's overhead in the protocol
> > that becomes the bottleneck. Arcfour didn't max out the CPU, nor the disk
> > or network I/O, so what could be slowing it down? Thoughts? Suggestions?
> > 
> > 								-Rob
> >