https://bugzilla.mindrot.org/show_bug.cgi?id=1697
Darren Tucker <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #1 from Darren Tucker <[email protected]> 2010-01-13 22:25:50 EST --- I suspect you have a device in your network path that cannot handle large TCP windows, probably window scaling. One of the changes in the 4.7 release was: * 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. Previously this was limited to 64k, which is not enough to exercise TCP window scaling. You can confirm this by looking at the "SendQ" field in the connection in the netstat output on the sending side (this is on Linux, I don't know how to get the equivalent data on Windows). If the number is non-zero and doesn't decrease this is almost certainly the problem. You can also try disabling window scaling. On Linux, that's "echo 0 >/proc/sys/net/ipv4/tcp_window_scaling". I don't know about Windows but presumably it's in the registry somewhere. You'll only need to disable it on one end and retry the copy. -- Configure bugmail: https://bugzilla.mindrot.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. You are watching someone on the CC list of the bug. _______________________________________________ openssh-bugs mailing list [email protected] https://lists.mindrot.org/mailman/listinfo/openssh-bugs
