ADAPTIVE CONTROL OF WRITE CACHE SIZE IN A STORAGE DEVICE
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United States of America Patent
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Issued Date -
Mar 17, 2016
app pub date -
Sep 12, 2014
filing date -
Sep 12, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Technologies are described herein for adaptively controlling the size of a write cache in a storage device based on the time required to flush the cache. Upon receiving a write command at a controller for the storage device, an estimated cache flush time for the write cache is calculated based on the write commands contained therein. If the estimated cache flush time is greater than a maximum threshold time, the size of the write cache is decreased to control the cache flush time. If the estimated cache flush time is less than a minimum threshold time, the size of the write cache is increased to enhance random write performance.
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