On 3/23/2018 9:54 PM, Jordan Geoghegan wrote:
Hi Elliot,
It's Eliot, but no matter ...
What was your setup that allowed you to reach 500Mbit? How were you copying the files? Were you using SFTP, SCP or rsync?
I think I said rsync. It was over ssh. I disable compression since I use this to send large files that are already compressed.
Was it a Cygwin to Cygwin transfer, or was there another OS involved?
Sender: Surface Book Windows 10 (very up to date). Microsoft 1 Gb USB Ethernet adapter. Other end: RedHat kernel 3.10.0-693.17.1.el7.x86_64 on a recently purchased Xeon server made by Dell. As I think I mentioned before, I found that for wireless transfer (which this wasn't), to get better performance than recent drivers, I had to go to an somewhat old driver, and also disable 5G, using only the slower rate. Given that when I use wireless I am often at home and have only 12 Mbps uplink from Comcase, using the slower wireless is not a bandwidth problem. However, something about the drivers still limits me to about half the theoretical rate. I get a very regular square-wave sort of pattern when watching the transfer rate, with a period of almost exactly 10 secs. Again, that is only for wireless. Ethernet, except at the very highest rates, hits the max and generally stays there, e.g., 150 Mbps on the slower net from my office. Regards - Eliot -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
