Make it possible to set `Response/Request` `highWaterMark` on `http.Server`

[ronag]

It would be helpful to have an option on http.createServer that sets the highWaterMark on all sockets created. The default highWaterMark is IMHO kind of low for most modern server hardware...

[ronag]

@nodejs/performance

[mcollina]

I think we can safely increase it. Maybe bring it to 32KB both ways?

[ronag]

I think we can safely increase it. Maybe bring it to 32KB both ways?

#46608 does takes us some of the way but I think it's varies from case to case how high one can go, e.g a large amazon instance vs a raspberry pi.

[benjamingr]

Was about to repeat what Matteo said - can we just increase it?

If we can't do it safely across all envs - can we just increase it based on some parameter of the system?

[ronag]

Some push back in #46608

[HinataKah0]

Hi,
I am interested to work on the changes.

What I have tried,

Option 1:

1. Store the new opt in storeHTTPOptions
2. Set it when calling IncomingMessage
3. Set it when calling ServerResponse, similar to setting kUniqueHeaders

Draft Commit

Option 2:

Set both (readable|writable)HighWaterMark when creating a new Socket.

Draft Commit

I'll open a PR. If this is no longer needed, please close it. 😄
Thanks!