Navigation: Linux Kernel Driver DataBase - web LKDDB: Main index - R index

CONFIG_RCU_FAST_NO_HZ: Accelerate last non-dyntick-idle CPU's grace periods

General informations

The Linux kernel configuration item CONFIG_RCU_FAST_NO_HZ:

Help text

This option permits CPUs to enter dynticks-idle state even if they have RCU callbacks queued, and prevents RCU from waking these CPUs up more than roughly once every four jiffies (by default, you can adjust this using the rcutree.rcu_idle_gp_delay parameter), thus improving energy efficiency. On the other hand, this option increases the duration of RCU grace periods, for example, slowing down synchronize_rcu().

Say Y if energy efficiency is critically important, and you don't care about increased grace-period durations.

Say N if you are unsure.



Raw data from LKDDb:


This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

Automatic links from Google (and ads)

Custom Search

Popular queries:

Navigation: Linux Kernel Driver DataBase - web LKDDB: main index - R index

Automatically generated (in year 2017) with in lkddb-sources.