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

Solution In Progress - Updated -

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?

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Close

Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.