Re: Sftp: performance enhancing changes

[Nicolas Williams <Nicolas.Williams%sun.com@localhost>]

On Fri, Sep 05, 2003 at 11:09:32PM -0400, Thor Simon wrote:
> On Fri, Sep 05, 2003 at 05:16:53PM -0700, Nicolas Williams wrote:
> >
> > No.  The consensus of the SFTP perf thread was, IIRC, that there is no
> > handbrake in either SSHv2 or SFTP and that clients and servers should be
> > smart about using larger windows for the SFTP sub-system.
> 
> There are other applications that display horrific performance characteristics
> over at least some widespread SSHv2 implementations.  One notable one is
> rsync.

This may be due to the SSHv2 client and/or server implementations
setting small window sizes for what they think is an interactive
session.  I suggest that you bring this up with the implementor, that
you try not using ptys and/or that you try making rsync a sub-system.

Nico
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