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Network Security Secure-Shell
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Re: HPN-SSH Performance vs. OpenSSH/SFTP Performance

from [Mohacsi Janos] Network Security [Permanent Link]
Subject: Re: HPN-SSH Performance vs. OpenSSH/SFTP Performance
Date: Fri, 16 Nov 2007 12:47:57 +0100 (CET)
Hari,
You might expect some difference in TCP buffer tuning if Bandwidth*RTTDelay is much higher than on LAN.
Regards,

Janos Mohacsi
Network Engineer, Research Associate, Head of Network Planning and Projects
NIIF/HUNGARNET, HUNGARY
Key 70EF9882: DEC2 C685 1ED4 C95A 145F  4300 6F64 7B00 70EF 9882

On Wed, 14 Nov 2007, Hari Sekhon wrote:

I quickly installed this on two systems when I found it, and then scp-ed some stuff across both systems but didn't notice any performance increase for the transfer rates/times on my local gigabit lan, in fact it was slower. Perhaps the benefits are more over slow wan connections...

-h

Hari Sekhon



Mathew Brown wrote: 
Hi,
  I just came across the High Performance SSH/SCP - (HPN-SSH) -
  http://www.psc.edu/networking/projects/hpn-ssh/ - and was wondering if
  the HPN patches had been ported to mailine OpenSSH.  If not, what
  suggestions are available for improving the speed of SFTP in local LAN
  environments?  Thanks for your help.


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