Re: Any cygwin builds with the HPN-SSH patch?

From: Alan Vinh <alanvinh_at_**********.***>
Date: Thu Feb 14 2008 - 15:50:41 EST

Hi Rory,

Do you have the executables with the HPN patch compiled into them that you can make available publicly? What modules are changed with the HPN patch? Can we just substitute those executables or how involved is it to get the new/HPN version to work properly?

Like Doyle, I'm looking for a WindowsSSH package that is already built with the HPN patch. Any ideas where we can get this?

I looked at the CopSSH 1.4.3 package but it does not say if the HPN patch is built into it.

Thanks - Alan

Rory Campbell-Lange wrote:

On 14/02/08, Alan Vinh (alanvinh@verizon.net) wrote:
  

I'm interested in the same solution, i.e., is there a way to move big
files via ssh? sftp and scp are much slower than plain ftp due to the
encryption involved (ftp is already slow without the encryption
involved for ssh). Does anyone have a solution for moving large files
using encryption such as going through SSH with decent speed?
    

The HPN patch tunes "statically defined internal flow control buffers"
to dramatically improve SSH/SCP performance in high-bandwidth
situations, and where machines have more CPU power. See

http://www.psc.edu/networking/projects/hpn-ssh/

The systems should also have a "properly tuned TCP/IP stack".

We are about to test this as we sync GBs of data nightly. I'm also keen
to see how a pure VPN approach compares to normal SSH and HPN+SSH.

Rory
  

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