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- Virtual_memory_compression abstract "Virtual memory compression (also referred to as RAM compression and memory compression) is a memory management technique that utilizes data compression to reduce the size or number of paging requests to and from the auxiliary storage. In a virtual memory compression system, paging requests are compressed and stored in physical memory, which is usually random-access memory (RAM), or sent as compressed to auxiliary storage such as a hard disk drive (HDD) or solid-state drive (SSD). In both cases the virtual memory range whose contents has been compressed during the paging request is marked inaccessible so that attempts to access compressed pages can trigger page faults and reversal of the process (retrieval from auxiliary storage and decompression). The footprint of the data being paged is reduced by the compression process; in the first instance, the freed RAM is returned to the available physical memory pool, while the compressed portion is kept in RAM. In the second instance, the compressed data is sent to auxiliary storage but the resulting I/O operation is smaller and therefore takes less time.In some implementations, including zswap, zram and Helix Software Company’s Hurricane, the entire process is implemented in software. In other systems, such as IBM's MXT, the compression process occurs in a dedicated processor that handles transfers between a local cache and RAM.Virtual memory compression is distinct from garbage collection (GC) systems, which remove unused memory blocks and in some cases consolidate used memory regions, reducing fragmentation and improving efficiency. Virtual memory compression is also distinct from context switching systems, such as Connectix’s RAM Doubler and Apple OS 7.1, in which inactive processes are suspended and then compressed as a whole.".
- Virtual_memory_compression wikiPageID "44942220".
- Virtual_memory_compression wikiPageLength "17572".
- Virtual_memory_compression wikiPageOutDegree "52".
- Virtual_memory_compression wikiPageRevisionID "693104865".
- Virtual_memory_compression wikiPageWikiLink Android_(operating_system).
- Virtual_memory_compression wikiPageWikiLink Auxiliary_memory.
- Virtual_memory_compression wikiPageWikiLink CPU_cache.
- Virtual_memory_compression wikiPageWikiLink Cache_(computing).
- Virtual_memory_compression wikiPageWikiLink Cache_algorithms.
- Virtual_memory_compression wikiPageWikiLink Category:Virtual_memory.
- Virtual_memory_compression wikiPageWikiLink Chrome_OS.
- Virtual_memory_compression wikiPageWikiLink Computer_data_storage.
- Virtual_memory_compression wikiPageWikiLink Context_switch.
- Virtual_memory_compression wikiPageWikiLink DDR3_SDRAM.
- Virtual_memory_compression wikiPageWikiLink Data_compression.
- Virtual_memory_compression wikiPageWikiLink Data_compression_ratio.
- Virtual_memory_compression wikiPageWikiLink Disk_compression.
- Virtual_memory_compression wikiPageWikiLink Embedded_system.
- Virtual_memory_compression wikiPageWikiLink Flash_memory.
- Virtual_memory_compression wikiPageWikiLink Garbage_collection_(computer_science).
- Virtual_memory_compression wikiPageWikiLink Hard_disk_drive.
- Virtual_memory_compression wikiPageWikiLink Helix_Software_Company.
- Virtual_memory_compression wikiPageWikiLink IBM_AIX.
- Virtual_memory_compression wikiPageWikiLink Lempel–Ziv–Stac.
- Virtual_memory_compression wikiPageWikiLink Linux.
- Virtual_memory_compression wikiPageWikiLink Linux_kernel.
- Virtual_memory_compression wikiPageWikiLink Megabyte.
- Virtual_memory_compression wikiPageWikiLink Memory_management.
- Virtual_memory_compression wikiPageWikiLink Microsoft.
- Virtual_memory_compression wikiPageWikiLink Moores_law.
- Virtual_memory_compression wikiPageWikiLink OS_X_Mavericks.
- Virtual_memory_compression wikiPageWikiLink POWER7.
- Virtual_memory_compression wikiPageWikiLink Page_fault.
- Virtual_memory_compression wikiPageWikiLink Paging.
- Virtual_memory_compression wikiPageWikiLink Pentium.
- Virtual_memory_compression wikiPageWikiLink Process_(computing).
- Virtual_memory_compression wikiPageWikiLink QEMM.
- Virtual_memory_compression wikiPageWikiLink RAMDoubler.
- Virtual_memory_compression wikiPageWikiLink Random-access_memory.
- Virtual_memory_compression wikiPageWikiLink Run-length_encoding.
- Virtual_memory_compression wikiPageWikiLink SoftRAM.
- Virtual_memory_compression wikiPageWikiLink Solid-state_drive.
- Virtual_memory_compression wikiPageWikiLink Stac_Electronics.
- Virtual_memory_compression wikiPageWikiLink Thrashing_(computer_science).
- Virtual_memory_compression wikiPageWikiLink Virtual_memory.
- Virtual_memory_compression wikiPageWikiLink Windows_10.
- Virtual_memory_compression wikiPageWikiLink Windows_95.
- Virtual_memory_compression wikiPageWikiLink Windows_Insider.
- Virtual_memory_compression wikiPageWikiLink Zram.
- Virtual_memory_compression wikiPageWikiLink Zswap.
- Virtual_memory_compression wikiPageWikiLinkText "Compression".
- Virtual_memory_compression wikiPageWikiLinkText "Virtual memory compression".
- Virtual_memory_compression wikiPageWikiLinkText "virtual memory compression".
- Virtual_memory_compression wikiPageUsesTemplate Template:Citation_needed.
- Virtual_memory_compression wikiPageUsesTemplate Template:Mdashb.
- Virtual_memory_compression wikiPageUsesTemplate Template:Memory_management_navbox.
- Virtual_memory_compression wikiPageUsesTemplate Template:More_references.
- Virtual_memory_compression wikiPageUsesTemplate Template:Operating_system.
- Virtual_memory_compression wikiPageUsesTemplate Template:Portal.
- Virtual_memory_compression wikiPageUsesTemplate Template:Reflist.
- Virtual_memory_compression wikiPageUsesTemplate Template:Unreferenced_section.
- Virtual_memory_compression wikiPageUsesTemplate Template:Use_mdy_dates.
- Virtual_memory_compression subject Category:Virtual_memory.
- Virtual_memory_compression hypernym Technique.
- Virtual_memory_compression type TopicalConcept.
- Virtual_memory_compression comment "Virtual memory compression (also referred to as RAM compression and memory compression) is a memory management technique that utilizes data compression to reduce the size or number of paging requests to and from the auxiliary storage. In a virtual memory compression system, paging requests are compressed and stored in physical memory, which is usually random-access memory (RAM), or sent as compressed to auxiliary storage such as a hard disk drive (HDD) or solid-state drive (SSD).".
- Virtual_memory_compression label "Virtual memory compression".
- Virtual_memory_compression sameAs Q21041449.
- Virtual_memory_compression sameAs m.012lb39z.
- Virtual_memory_compression sameAs Q21041449.
- Virtual_memory_compression wasDerivedFrom Virtual_memory_compression?oldid=693104865.
- Virtual_memory_compression isPrimaryTopicOf Virtual_memory_compression.