WO2001080016A3 - Parallel compression/decompression system and method for implementation of in-memory compressed cache - Google Patents

Parallel compression/decompression system and method for implementation of in-memory compressed cache Download PDF

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Publication number
WO2001080016A3
WO2001080016A3 PCT/US2001/012408 US0112408W WO0180016A3 WO 2001080016 A3 WO2001080016 A3 WO 2001080016A3 US 0112408 W US0112408 W US 0112408W WO 0180016 A3 WO0180016 A3 WO 0180016A3
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WO
WIPO (PCT)
Prior art keywords
memory
compressed
subsystem
page
disclosure
Prior art date
Application number
PCT/US2001/012408
Other languages
French (fr)
Other versions
WO2001080016A2 (en
Inventor
Thomas A Dye
Ii Manuel J Alvarez
Peter Geiger
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Interactive Silicon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Interactive Silicon Inc filed Critical Interactive Silicon Inc
Priority to AU2001251646A priority Critical patent/AU2001251646A1/en
Publication of WO2001080016A2 publication Critical patent/WO2001080016A2/en
Publication of WO2001080016A3 publication Critical patent/WO2001080016A3/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/0223—User address space allocation, e.g. contiguous or non contiguous base addressing
    • G06F12/023—Free address space management
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
    • G06F12/0866—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches for peripheral storage systems, e.g. disk cache
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
    • G06F12/12—Replacement control
    • G06F12/121—Replacement control using replacement algorithms
    • G06F12/123—Replacement control using replacement algorithms with age lists, e.g. queue, most recently used [MRU] list or least recently used [LRU] list
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/40—Specific encoding of data in memory or cache
    • G06F2212/401—Compressed data
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
    • G06F2212/50—Control mechanisms for virtual memory, cache or TLB
    • G06F2212/502—Control mechanisms for virtual memory, cache or TLB using adaptive policy

Abstract

A device embedded into the memory subsystem of a computing device used to accelerate the transfer of active memory pages for usage by the system CPU from either compressed memory cache buffer or the addition of a compressed disk subsystem for improved system cost and performance. The Compression Enhanced Dual In-line Memory Module of the present invention preferably uses parallel lossless compression and decompression engines embedded into the device for improved system memory page density and I/O subsystem data bandwidth. In addition, the invention includes novel use of the operating system software to optimize page transfers between compressed disk partitions, compressed cache memory and inactive/active page memory within the computer system. The disclosure also indicates preferred methods for initialization, recognition and operation of the device transparently within industry standard memory interfaces and subsystems. The disclosure also indicates novel methods to interface to present operating system software and applications, which enable optimal usage for the compressed paging system memory environment.
PCT/US2001/012408 2000-04-14 2001-04-16 Parallel compression/decompression system and method for implementation of in-memory compressed cache WO2001080016A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001251646A AU2001251646A1 (en) 2000-04-14 2001-04-16 Parallel compression/decompression system and method for implementation of in-memory compressed cache

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/550,380 2000-04-14
US09/550,380 US6523102B1 (en) 2000-04-14 2000-04-14 Parallel compression/decompression system and method for implementation of in-memory compressed cache improving storage density and access speed for industry standard memory subsystems and in-line memory modules

Publications (2)

Publication Number Publication Date
WO2001080016A2 WO2001080016A2 (en) 2001-10-25
WO2001080016A3 true WO2001080016A3 (en) 2002-08-15

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PCT/US2001/012408 WO2001080016A2 (en) 2000-04-14 2001-04-16 Parallel compression/decompression system and method for implementation of in-memory compressed cache

Country Status (3)

Country Link
US (1) US6523102B1 (en)
AU (1) AU2001251646A1 (en)
WO (1) WO2001080016A2 (en)

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