@kpaly wrote:
Thank you all,
I am still confused the value provided by @cappalli, I could see when running iperf -u the throughput is like 450 Mbps but when it is tcp (iperf default ) , it is 200 . So my question the value (433 Mbps by cappalli) is udp or tcp
Sorry for any inconvenience
Thank you
The phy rate is the speed negotiated between the client and the access point. This "rate" can go up or down based on RF conditions and protocol overhead, but it does not guarantee throughput. It is like being on the expressway and the speed limit is 65, but because of traffic you can only go 20. The phy rate refers to a theoretical upper limit, but only half the throughput is possible due to protocol overhead. The speed gets even lower than that based on aggregation, RF contention and interference.
The phy rate that you see a client connected at is never achievable from a throughput perspective. There are ways to get additional throughput with iperf by changing the window size and more simultaneous streams, but it does not reflect any real world throughput testing, really.