Robert E. Seastrom wrote:
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...
Fedora 8 and 9 and Ubuntu 8.04 include the upstream OpenSSH which include large window patches. OpenSSH 4.7 ChangeLog contains:
Other changes, new functionality and fixes in this release:
...
* The SSH channel window size has been increased, and both ssh(1) sshd(8) now send window updates more aggressively. These improves performance on high-BDP (Bandwidth Delay Product) networks.
Cheers, Glen -- Glen Turner
