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Apparatus, System, and Method for Storing Metadata

a technology of metadata and metadata, applied in the field of metadata storage, can solve the problems of increasing the number of cache misses, reducing the efficiency of the cache device, and evicting data that yields cache misses

Inactive Publication Date: 2013-06-27
INTPROP HLDG 2 LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If data is evicted from a cache device, a subsequent request for the evicted data yields a cache miss.
Evicting the wrong data from a cache device can increase the number of cache misses and decrease the efficiency of the cache device.
A static division of a cache device between read data and write data can also be an inefficient use of the cache device if the static division does not reflect a user's working data set of read data and write data.

Method used

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Examples

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Embodiment Construction

[0035]As will be appreciated by one skilled in the art, aspects of the present invention may be embodied as a system, method or computer program product. Accordingly, aspects of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, micro-code, etc.) or an embodiment combining software and hardware aspects that may all generally be referred to herein as a “circuit,”“module” or “system.” Furthermore, aspects of the present invention may take the form of a computer program product embodied in one or more computer readable medium(s) having computer readable program code embodied thereon.

[0036]Many of the functional units described in this specification have been labeled as modules, in order to more particularly emphasize their implementation independence. For example, a module may be implemented as a hardware circuit comprising custom VLSI circuits or gate arrays, off-the-shelf semiconductors s...

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Abstract

Apparatuses, systems, and methods are disclosed for storing metadata. A mapping module is configured to maintain a mapping structure for logical addresses of a non-volatile device. A metadata module is configured to store membership metadata for the logical addresses with logical-to-physical mappings for the logical addresses in the mapping structure.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of and claims priority to U.S. patent application Ser. No. 13 / 406,287 entitled “APPARATUS, SYSTEM, AND METHOD FOR MANAGING CONTENTS OF A CACHE” and filed on Feb. 27, 2012 for David Atkisson et al., which claims priority to U.S. Provisional Patent Application No. 61 / 446,889 entitled “APPARATUS, SYSTEM, AND METHOD FOR MANAGING CONTENTS OF A CACHE” and filed on Feb. 25, 2011 for David Atkisson et al., both of which are incorporated by reference in their entirety.FIELD[0002]The subject matter disclosed herein relates to storing metadata and more particularly relates to storing metadata in a mapping structure.BACKGROUND[0003]1. Description of the Related Art[0004]A cache device typically has a smaller storage capacity than the backing store with which the cache device is associated. As a cache device fills with cached data, certain cached data may be evicted to free up room to cache additional data. If data i...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06F12/02
CPCG06F12/0802G06F12/126G06F12/0895G06F12/0246G06F2212/601
Inventor ATKISSON, DAVIDFLYNN, DAVID
Owner INTPROP HLDG 2 LLC
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