Best utilizing fat long pipes and large file transfer

Robert E. Seastrom rs at
Fri Jun 13 01:15:49 UTC 2008

Randy Bush <randy at> writes:

> and for those of us who are addicted to simple rsync, or whatever over
> ssh, you should be aware of the really bad openssh windowing issue.

As a user of hpn-ssh for years, I have to wonder if there is any
reason (aside from the sheer cussedness for which Theo is infamous)
that the window improvements at least from hpn-ssh haven't been
backported into mainline openssh?  I suppose there might be
portability concerns with the multithreaded ciphers, and there's
certainly a good argument for not supporting NONE as a cipher type out
of the box without a recompile, but there's not much excuse for the
fixed size tiny buffers - I mean, it's 2008 already...


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