> On May 14, 2018, at 4:22 PM, Don Seiler <don@seiler.us> wrote:
>
> Ping shows a pretty solid latency of 49-50 ms.
>
Depending on your window size; that will determine the throughput (not to exceed the link speed).
TCP Window / latency = throughput; i.e. if the windows is 16kb with 50 ms latency the max throughput is 640kb/s or
5.12Mbps
16/.05 = 640kb/s
The window size will vary during the connection; it will start off small and then progress to your max setting. Now
youneed to determine how large you window can get and what is it actually doing; that will require observing the
connectionvia tcpdump or similar tools. Dropped packets will prevent the window size from increasing and also cause
retransmits.
