realtime:documentation:howto:tools:ticklesskernel
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realtime:documentation:howto:tools:ticklesskernel [2023/08/20 14:02] costa.shul [Tickless Kernel] nohz_full |
realtime:documentation:howto:tools:ticklesskernel [2023/09/06 03:06] costa.shul [Tickless kernel] tick_nohz_full_cpu |
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| - | ====== Tickless Kernel ====== | + | ====== Tickless kernel ====== |
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| Full dynticks system (tickless) mode is enabled by [[https://elixir.bootlin.com/linux/latest/A/ident/CONFIG_NO_HZ_FULL|CONFIG_NO_HZ_FULL]] and activated by [[https://docs.kernel.org/admin-guide/kernel-parameters.html#cpu-lists|nohz_full boot parameter]]. | Full dynticks system (tickless) mode is enabled by [[https://elixir.bootlin.com/linux/latest/A/ident/CONFIG_NO_HZ_FULL|CONFIG_NO_HZ_FULL]] and activated by [[https://docs.kernel.org/admin-guide/kernel-parameters.html#cpu-lists|nohz_full boot parameter]]. | ||
| - | The kernel adaptively tries to shutdown the tick whenever possible, even when the CPU is running tasks. | + | The kernel adaptively tries to shutdown the tick whenever possible, even when the CPU is running tasks with function [[https://elixir.bootlin.com/linux/latest/A/ident/tick_nohz_full_cpu|tick_nohz_full_cpu]]. |
| - | ===== More Information ===== | + | ===== More information ===== |
| * [[https://www.suse.com/c/cpu-isolation-full-dynticks-part2/|CPU Isolation – Full dynticks internals]] | * [[https://www.suse.com/c/cpu-isolation-full-dynticks-part2/|CPU Isolation – Full dynticks internals]] | ||
| * [[https://en.wikipedia.org/wiki/Tickless_kernel|Tickless kernel]] | * [[https://en.wikipedia.org/wiki/Tickless_kernel|Tickless kernel]] | ||
| + | * [[https://docs.kernel.org/timers/no_hz.html|NO_HZ: Reducing Scheduling-Clock Ticks]] | ||
realtime/documentation/howto/tools/ticklesskernel.txt · Last modified: 2023/10/03 08:20 by costa.shul
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