Coalescing (computer science): Difference between revisions

Revision as of 08:32, 18 March 2013

Revision as of 18:01, 24 November 2013

Line 1:

{{Use dmy dates|date=August 2012}}

In [[computer science]], '''coalescing''' is the act of merging two adjacent free blocks of memory. When an application frees memory, gaps can fall in the [[memory segment]] that the application uses. Among other techniques, coalescing is used to reduce [[Fragmentation (computer)|external fragmentation]], but is not totally effective. Coalescing can be done as soon as blocks are freed, or it can be deferred until some time later (known as deferred coalescing), or it might not be done at all.

Coalescence and related techniques like heap compaction, can be used in [[Garbage collection (computer science)|garbage collection]].