How can I optimize Wifi latency ?.

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Joined: Wed Apr 14, 2021 6:08 pm

How can I optimize Wifi latency ?.

Postby alexsunny123 » Wed Apr 14, 2021 6:11 pm


I'm trying to program an arduino over wifi using an ESP8266 as a transparent TCP/Wifi to UART bridge. The problem I'm running into is that the round-trip latency from the programmer sending a block to the arduino until it receives the ACK back from the arduino is too long. Looking at tcpdump, it looks like it takes ~400ms for the ESP to respond to any TCP data. I can see from looking at the serial lines that it's not the arduino's fault. Is this typical? Can I optimize this somehow?


Her Mary
Posts: 495
Joined: Mon Oct 27, 2014 11:09 am

Re: How can I optimize Wifi latency ?.

Postby Her Mary » Fri May 07, 2021 3:17 pm

Bad network may cause TCP re-transmit. And also you can try to send large packets.

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