Re: Different clients give VERY different SFTP transfer speeds

From: Markus Friedl (markus_at_openbsd.org)
Date: 07/09/03

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    Date: Wed, 9 Jul 2003 10:52:48 +0200
To: Ben Smith <securityfocus@bensmith.fastmail.fm--nospam>

    you OpenSSH sftp client is very old it seems.

    On Tue, Jul 08, 2003 at 09:55:11PM +0100, Ben Smith wrote:
    > Can anyone suggest why in a lab two PCs connected by 100Mb ethernet
    > through a switch give different throughput rates depending on the SFTP
    > client used?
    >
    > Putty and OpenSSH for Windows give approx. 600Kb/s
    > SecureFX (trial version) gives 4200Kb/s
    >
    > In each case server software is setup identically and the same sample
    > file is used. Compression is off (although it makes very little
    > difference when used) and CPU usage peaks at 60% on both machines. I
    > thought that there might be a difference in ciphers being used, but
    > changing the cipher SecureFX uses only ever drops the speed to 2000Kb/s
    > at worst.
    >
    > I'm stumped...
    >
    > Regards,
    >
    > Ben

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