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

Alan Vinh <[email protected]> Thu, 14 Feb 2008 15:50:41 -0500
Newsgroups gmane.network.ssh.windows
Message-ID <[email protected]>
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<font size="+1">Hi Rory,<br>
<br>
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?<br>
<br>
Like Doyle, I'm looking for a WindowsSSH package that is already built
with the HPN patch. Any ideas where we can get this?<br>
<br>
I looked at the CopSSH 1.4.3 package but it does not say if the HPN
patch is built into it.<br>
<br>
Thanks - Alan<br>
</font><br>
Rory Campbell-Lange wrote:
<blockquote cite="mid:[email protected]"
 type="cite">
  <pre wrap="">On 14/02/08, Alan Vinh (<a class="moz-txt-link-abbreviated" href="mailto:[email protected]">[email protected]</a>) wrote:
  </pre>
  <blockquote type="cite">
    <pre wrap="">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?
    </pre>
  </blockquote>
  <pre wrap=""><!---->
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

<a class="moz-txt-link-freetext" href="http://www.psc.edu/networking/projects/hpn-ssh/">http://www.psc.edu/networking/projects/hpn-ssh/</a>

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
  </pre>
</blockquote>
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