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Priority-Boosting RCU Read-Side Critical Sections

Priority-Boosting RCU Read-Side Critical Sections

Posted Feb 9, 2007 14:44 UTC (Fri) by PaulMcKenney (subscriber, #9624)
In reply to: Priority-Boosting RCU Read-Side Critical Sections by nix
Parent article: Priority-Boosting RCU Read-Side Critical Sections

Indeed, and this turns out to be a problem for dynticks -- the CPU running the RCU priority booster will never be able to shut off its scheduling-clock interrupt. Therefore, the next step is to avoid waking the RCU priority-booster task when there are no sleeping RCU readers. In the meantime, Ingo Molnar has wisely turned the wakeup rate down from 100 times per second to one time per second.


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