Slow serial port sharing using rdp

Carlo Giuseppe Porta 10

I developed an application in visual basic using Visual studio 2022 .net. The application reads and processes data from a digital scale in real time, using the serial port. The application works perfectly when used on a local PC. However, if I install the application on a Windows Server 2019 server and access it remotely using RDP sharing the serial port of the PC to which the scale is connected, the data update is very slow despite the internet connection being a 10G fiber line. Is there a solution to the problem?

Douglas Ibarra 0 Reputation points

2024-09-07T05:48:27.46+00:00

I am also experiencing slow serial port redirection back to local RS232 devices set at 9600 bps and even 19400 bps. These are pole displays for POS software and only need about 40 characters sent to it. I can see the text scrolling onto the display instead of instantly appearing as it does when the application is run locally.

I have tried several different pole display manufacturers using different manufacturer serial to usb drivers (such as Prolific and Future). It appears that something is going on with the data prior to the redirection that is slowing things up. Does anyone else have any clues here?

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Slow serial port sharing using rdp

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