FACTOID # 39: The eight most developed countries all speak Germanic languages.
 
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Encyclopedia > Priority inheritance

In computer science, priority inheritance is a method for eliminating priority inversion problems. Using this programming method, a process scheduling algorithm will increase the priority of a process to the maximum priority of any process waiting for any resource the process has a resource lock on. Wikibooks Wikiversity has more about this subject: School of Computer Science Open Directory Project: Computer Science Collection of Computer Science Bibliographies Belief that title science in computer science is inappropriate Categories: Computer science ... In scheduling, priority inversion is the scenario where a low priority task holds a shared resource that is required by a high priority task. ...


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ITworld.com - Solaris 8 threads attributes (1780 words)
We discussed the problem of priority inversion and the solution, priority inheritance, as it's implemented in the kernel in August 1999's column.
Priority inversion describes a scenario in which a higher-priority thread is prevented from running because a lower-priority thread is holding a resource the higher-priority thread requires to execute.
That is, if a thread has a priority of 50 and the lock's ceiling value is 60, the thread will have its priority promoted to 60 for as long as it owns the lock, after which its priority is reset to 50.
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