Technique and apparatus for identifying cache segments for caching data to be written to main memory

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United States of America Patent

PATENT NO 8683142
SERIAL NO

13590884

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Abstract

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A memory apparatus having a cache memory including cache segments, and memorizing validity data indicative of whether or not each of the sectors contained in each cache segment is a valid sector inclusive of valid data; and a cache controlling component for controlling access to the cache memory. The cache controlling component includes a detecting component for detecting, when writing a cache segment back to the main memory, areas having consecutive invalid sectors by accessing validity data corresponding to the cache segment, and a write-back controlling component issuing a read command to the main memory, the read command being for reading data into each area detected, making the area a valid sector, and writing the data in the cache segment back to the main memory.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Harada, Nobuyuki Machida, JP 58 1701
Nakada, Takeo Kawaguchi, JP 12 262
Ohba, Nobuyuki Sendai, JP 65 576

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