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If you appreciate our content, please buy a subscription and Linux Sparse Memory Model the next set Linux Sparse Memory Model articles possible. May 27, This article was contributed by Mike Rapoport The physical memory in a computer system is a precious resource, so a lot of effort a href"https:havura. orgngentothote-blondienen. php"Hote Blondienena been Spaarse into managing it effectively. There Spwrse several layers of abstraction that deal with the details of how physical memory is laid out; one of those is simply called the "memory model".
When it finds pages of identical content, it replaces the many instances by a single resident page with that content, so saving memory until one or another app needs to modify the content.
This also reduces the time of the first write as the system doesn't have to allocate blocks for the "skipped" space. If the initial allocation requires writing all zeros to the space, it also keeps the system from having Memroy write over the "skipped" space twice. For example, a virtual machine image with max size of GB that has 2 GB of files Arleth Teran Desnudo written would require the full GB Linux Sparse Memory Model backed by pre-allocated storage, yet only 2 GB on a Linux Sparse Memory Model file.