upload large file chunk too slow

[linzeennnn]

I tried uploading a file in chunks, each chunk is 20MB, but the processing is very slow. If I adjust the chunks to 1MB each, the speed will be much faster. However, considering that it is not reasonable to upload files of 1GB or more in chunks of 1MB, I still want to chunk them in 20MB chunks. Is there any way to adjust and increase the speed?

I modified the macro but upload still slowly
#define MG_MAX_RECV_SIZE (300UL * 1024UL * 1024UL)

[scaprile]

Please see our documentation, and follow the guidelines in our tutorials.
It is not slow for us https://mongoose.ws/documentation/tutorials/http/file-uploads/ https://github.com/cesanta/mongoose/tree/master/tutorials/http/file-transfer

Define "too slow"
Define "reasonable"
Mongoose is oriented towards embedded systems, we don't transfer 1GB files, neither 1MB is likely. Mongoose is not designed to be a lightning fast alternative to Apache, it is an embedded library to make things easy.
Mongoose is not a computer program, it is an embedded library to make things easy, you write your code and use Mongoose.
It is impossible for us to tell what you're doing wrong if you don't say what you're doing, how you are doing it, where you are doing it, with what, against what. Where is Mongoose ? Who uploads ? Who receives ?

Please sniff your network (using Wireshark, for example) and observe the traffic.
If, after your network inspection, you find an actual issue, feel free to open an issue, fill the issue template, and provide us with pertinent information (including useful network capture files; no snapshots, please attach capture files) in order to reproduce and fix the issue. We don't inspect your code for errors, please send the minimum piece of code that can reproduce the issue