Process hangs on node <= 14.1.0 and performance issue

[davidfirst]

I created a reproducible repo https://github.com/davidfirst/stream-issue-node-14-1-0 with instructions on how to reproduce.

In short, I run exec() and write data (string) to the ssh server through the stream.stdin. When the string is small (~1MB) it works with no issue. When the string is 10MB it works on node <=14.0.0 but it hangs on node >= 14.1.0.

Another issue I found, not related to any node version is the performance. The longer the string the lower the transfer rate. I have a feeling that it is related to the back-pressure, but I tried with piping as well, which suppose to handle the backpressure.

More details in the README of the repo above.

I didn't create two issues because there is a good chance that fixing the performance issue will fix the first issue as well.

(to have some more context for this issue, see teambit/bit#2844.

[davidfirst]

Oops, I realized I opened the issue in the wrong place. I'm closing this.
I opened it in the ssh2 repo. mscdex/ssh2#908.