ssh speed

[Markus Friedl]

did you use compression?

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
>