In news:[EMAIL PROTECTED],
Brian Dessent typed:
Cary Jamison wrote:
I think we all know that encryption is a factor. The site still
states :
No, I wouldn't say that we all know that. I just ran openssl speed
and on my very modest Athlon XP 1700 machine and both the aes-128 and
blowfish
Cary Jamison wrote:
Ok, I probably am. But, you wouldn't expect the buffer tuning to make such
a big difference, either, since a fast processor can surely move data around
in memory several times faster than it can move it over the net. All these
things add up, though
The window size
The low speed of ssh and scp is not because of the encyption.
The problem is the 64K limit for the window size in the protocoll.
Further information and a patch can be found here:
http://www.psc.edu/networking/projects/hpn-ssh/
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In news:[EMAIL PROTECTED],
Holger Krull typed:
The low speed of ssh and scp is not because of the encyption.
The problem is the 64K limit for the window size in the protocoll.
Further information and a patch can be found here:
http://www.psc.edu/networking/projects/hpn-ssh/
I think we all
Cary Jamison schrieb:
http://www.psc.edu/networking/projects/hpn-ssh/
I think we all know that encryption is a factor.
But a small one, compared to the limit imposed by the window size.
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Problem reports:
Cary Jamison wrote:
I think we all know that encryption is a factor. The site still states :
No, I wouldn't say that we all know that. I just ran openssl speed
and on my very modest Athlon XP 1700 machine and both the aes-128 and
blowfish ciphers clocked in at approximately 60-65
lin q wrote:
A dumb question, could I somehow remove the encryption at all?
Well, -c none doesn't seem to work :-), so I'm guessing your best bet
is to use rsh instead of ssh for this. Voila, no encryption.
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Problem
Hi,
I have 2 Windows XP machines installed with latest cygwin. In using scp to
copy some large chunk of data, I find that the speed is never over 180KB/s.
The 2 machines are on the same giga bit sub network.
I wonder if I can do something to improve the speed?
Thanks.
lin q wrote:
Hi,
I have 2 Windows XP machines installed with latest cygwin. In using scp
to copy some large chunk of data, I find that the speed is never over
180KB/s. The 2 machines are on the same giga bit sub network.
I wonder if I can do something to improve the speed?
Perhaps
File transfers in scp are encrypted and encryption is CPU intensive.
Either your local workstation or your server might not be able to
encrypt file transfer stream at the same speed, your connection is
able to transfer it. You may try to choose different encryption
algorithm on Login dialog.
to tell scp not bothering about encryption.
For some reason rcp does not work on my cygwin.
Thanks a lot.
From: Jim Drash [EMAIL PROTECTED]
To: cygwin@cygwin.com
Subject: Re: How to improve scp speed?
Date: Mon, 28 Nov 2005 15:38:24 -0500
File transfers in scp are encrypted and encryption
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