Significantly reduced I/O throughput and increased swap use after kernel upgrade

Solution Verified - Updated -

Issue

  • A server was upgraded to 2.6.32-358 last Friday. Immediately after the reboot, the load average was around 4 and it climbed slowly over the weekend to about 80. The server became progressively unresponsive and unable to start new processes or accept new connections.
  • Reverted to 2.6.32-279 and the issue disappeared.

Environment

  • Red Hat Enterprise Linux, version 6
  • Kernel >= 2.6.32-358.el6.x86_64

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.