Do dirty ratio writeback thresholds take HugePages into account?

Solution Verified - Updated -

Issue

  • Do dirty page allocations take HugePages into account?
  • Do dirty writeback thresholds based on dirty ratios (kernel tunables dirty_ratio and dirty_background_ratio) take allocated HugePages into account?

For example, if dirty_ratio is set to 10% on a system with 100Gb RAM and 90Gb of HugePages allocated, does the calculated threshold become 10Gb (10% of total RAM) or 1Gb (10% of available RAM)?

Environment

  • Red Hat Enterprise Linux 6 and later
  • Red Hat Enterprise Linux 5 and older
  • HugePages

Subscriber exclusive content

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

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content