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CONFIG_NO_HZ: Tickless System (Dynamic Ticks)

General informations

The Linux kernel configuration item CONFIG_NO_HZ has multiple definitions:

Old Idle dynticks config found in kernel/time/Kconfig

The configuration item CONFIG_NO_HZ:

Help text

This is the old config entry that enables dynticks idle. We keep it around for a little while to enforce backward compatibility with older config files.

Tickless System (Dynamic Ticks) found in kernel/time/Kconfig

The configuration item CONFIG_NO_HZ:

Help text

This option enables a tickless system: timer interrupts will only trigger on an as-needed basis both when the system is busy and when the system is idle.

Hardware

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