What does dirty bit mean?
Definitions for dirty bit
dirty bit
This dictionary definitions page includes all the possible meanings, example usage and translations of the word dirty bit.
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Wikipedia
Dirty bit
A dirty bit or modified bit is a bit that is associated with a block of computer memory and indicates whether or not the corresponding block of memory has been modified. The dirty bit is set when the processor writes to (modifies) this memory. The bit indicates that its associated block of memory has been modified and has not been saved to storage yet. When a block of memory is to be replaced, its corresponding dirty bit is checked to see if the block needs to be written back to secondary memory before being replaced or if it can simply be removed. Dirty bits are used by the CPU cache and in the page replacement algorithms of an operating system. Dirty bits can also be used in Incremental computing by marking segments of data that need to be processed or have yet to be processed. This technique can be used with delayed computing to avoid unnecessary processing of objects or states that have not changed. When the model is updated (usually by multiple sources), only the segments that need to be reprocessed will be marked dirty. Afterwards, an algorithm will scan the model for dirty segments and process them, marking them as clean. This ensures the unchanged segments are not recalculated and saves processor time.
Numerology
Chaldean Numerology
The numerical value of dirty bit in Chaldean Numerology is: 1
Pythagorean Numerology
The numerical value of dirty bit in Pythagorean Numerology is: 8
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"dirty bit." Definitions.net. STANDS4 LLC, 2024. Web. 19 Apr. 2024. <https://www.definitions.net/definition/dirty+bit>.
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