priority inversion
Transcription
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- US Pronunciation
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- US Pronunciation
- US IPA
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Definition of priority inversion words
- noun Technical meaning of priority inversion (parallel) The state of a concurrent system where a high priority task is waiting for a low priority task which is waiting for a medium priority task. The system may become unstable and crash under these circumstances. In an operating system that uses multiple tasks, each task (or context) may be given a priority. These priorities help the scheduler decide which task to run next. Consider tasks, L, M, and H, with priorities Low, Medium, and High. M is running and H is blocked waiting for some resource that is held by L. So long as any task with a priority higher than L is runable, it will prevent task L, and thus task H, from running. Priority inversion is generally considered either as a high-level design failure or an implementation issue to be taken into account depending on who is talking. Most operating systems have methods in place to prevent or take inversion into account. Priority inheritance is one method. The most public instance of priority inversion is the repeated 'fail-safe' rebooting of the Mars Pathfinder. base station ('Sagan Memorial Station'). 1
Information block about the term
Parts of speech for Priority inversion
noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
See also
Matching words
- Words starting with p
- Words starting with pr
- Words starting with pri
- Words starting with prio
- Words starting with prior
- Words starting with priori
- Words starting with priorit
- Words starting with priority
- Words starting with priorityi
- Words starting with priorityin
- Words starting with priorityinv
- Words starting with priorityinve
- Words starting with priorityinver
- Words starting with priorityinvers
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