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3/3 While the ability to run at nice priority -20 still requires root permission for the initial setup (or SYS_CAP_NICE), even that could *potentially* change with the introduction of a latency nice setting, if the kernel developers manage to implement unelevated latency re-nicing without opening up the gates for DOS attacks.

These developments are described in the LWN article 'The many faces of "latency nice"':

lwn.net/SubscriberLink/820659/

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