Memory hierarchy control method with replacement based on request frequency

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United States of America Patent

PATENT NO 4703422
SERIAL NO

06687160

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Abstract

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In a memory hierarchy system having two or more hierarchy storages of different access speeds and programs and/or data to be loaded on the hierarchy storages, an activity information acquisition unit and a display unit are provided to present information regarding selection of programs and/or data to be loaded on a higher level in memory hierarchy, a unit is provided which automatically decides loading of the programs and/or data on the higher level and executes reallocation of the programs and/or data on the basis of the information, and a unit is provided which permits the user to change the loading by using a user command. The user can make full use of these units during execution of the memory hierarchy control. In an embodiment, priority for the programs and/or data to be loaded on the higher level is calculated and decided. The programs and/or data are written into the real storage in accordance with their priority to increase the real storage hit rate upon occurrence of a next request for loading.

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Patent Owner(s)

Patent OwnerAddress
HITACHI LTDTOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arai, Toshiaki Yokohama, JP 133 3522
Kinoshita, Toshiyuki Sagamihara, JP 38 415
Kubo, Takashige Hachioji, JP 11 444
Mori, Hiromichi Yokohama, JP 6 67
Sato, Takao Kawasaki, JP 140 1504
Yoshizawa, Yasufumi Tachikawa, JP 5 141

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