WO2007065061A3 - Cooperative mechanism for efficient application memory allocation - Google Patents

Cooperative mechanism for efficient application memory allocation Download PDF

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Publication number
WO2007065061A3
WO2007065061A3 PCT/US2006/061087 US2006061087W WO2007065061A3 WO 2007065061 A3 WO2007065061 A3 WO 2007065061A3 US 2006061087 W US2006061087 W US 2006061087W WO 2007065061 A3 WO2007065061 A3 WO 2007065061A3
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WO
WIPO (PCT)
Prior art keywords
memory
kernel
available
page frames
reuse
Prior art date
Application number
PCT/US2006/061087
Other languages
French (fr)
Other versions
WO2007065061A2 (en
Inventor
Riel Henri Han Van
De Ven Adriaan Dm Van
Original Assignee
Red Hat Inc
Riel Henri Han Van
De Ven Adriaan Dm Van
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 Red Hat Inc, Riel Henri Han Van, De Ven Adriaan Dm Van filed Critical Red Hat Inc
Publication of WO2007065061A2 publication Critical patent/WO2007065061A2/en
Publication of WO2007065061A3 publication Critical patent/WO2007065061A3/en

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Classifications

    • 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
    • G06F12/12—Replacement control
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/14—Protection against unauthorised use of memory or access to memory

Abstract

System, method and computer program product for allocating physical memory to processes. The method includes enabling a kernel to free memory in a physical memory space corresponding to arbitrarily sized memory allocations released by processes or applications in a virtual memory space. After freeing the memory, the system determines whether freed physical memory in the physical memory space spans one or more fixed size memory units (e.g., page frames). The method further includes designating a status of the one or more page frames as available for reuse; the freed page frames marked as available for reuse being available for backing a new process without requiring the kernel to delete data included in the freed memory released by the process. The kernel may organize pages marked as available for reuse in one or more local 'pools' that is organized according to a variety of schemes which provide system efficiencies in that the kernel can eliminate the need for deleting of old data in those page frames without compromising data security.
PCT/US2006/061087 2005-11-21 2006-11-20 Cooperative mechanism for efficient application memory allocation WO2007065061A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/164,393 US7516291B2 (en) 2005-11-21 2005-11-21 Cooperative mechanism for efficient application memory allocation
US11/164,393 2005-11-21

Publications (2)

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WO2007065061A2 WO2007065061A2 (en) 2007-06-07
WO2007065061A3 true WO2007065061A3 (en) 2008-06-19

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US (2) US7516291B2 (en)
WO (1) WO2007065061A2 (en)

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Also Published As

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US20070118712A1 (en) 2007-05-24
US8321638B2 (en) 2012-11-27
US7516291B2 (en) 2009-04-07
US20090172337A1 (en) 2009-07-02
WO2007065061A2 (en) 2007-06-07

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