RHEL: What are delayed ACKs and can they be disabled?

Solution In Progress - Updated 2021-10-07T00:10:29+00:00 -

Issue

scp or other TCP throughput from a remote host is very slow. When we looked at the trace we noticed that the RHEL side is waiting for up to 40ms at times before sending an ACK.
How do delayed ACKs work on RHEL and can they be disabled?

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Here are the common uses of Markdown.

Code blocks

~~~
Code surrounded in tildes is easier to read
~~~

Links/URLs

[Red Hat Customer Portal](https://access.redhat.com)