MQX Software SolutionsのトピックRe: Reducing RAM usage for TCP connection

Reducing RAM usage for TCP connection

kfranz — Wed, 06 Jan 2021 18:10:22 GMT

We are using MQX 4.2.

How do I reduce the RAM usage when a TCP connection is established?

danielchen — Thu, 07 Jan 2021 07:09:22 GMT

Usually we can reducing RAM usage at compile time.

You can refer to RTCS user-guider.pdf

chapter 8: Compile time Options.

In what scenario you need to reducing RAM usage when a connection is established?

For UDP , we can change the socket tx/rx buffer size to reduce RAM usage at any time.

For TCP, we can change the socket rx/rx buffer size only before bound.

value = 256; 
setsockopt(sock, SOL_TCP,OPT_TBSIZE,&value,sizeof(value)); 
setsockopt(sock, SOL_TCP,OPT_RBSIZE,&value,sizeof(value));

So I would suggest you reduce RAM usage before TCP connection is established.

Regards

Daniel

Regards

Daniel

kfranz — Thu, 14 Jan 2021 14:59:12 GMT

Thank you for the information.

Unfortunately, it will be several weeks before I can get back to this project. I will try your suggestions at that time.