Dynamically adjusting write pacing by calculating a pacing level and then delaying writes for a first channel command word (CCW) based on pacing level

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United States of America Patent

PATENT NO 9182922
APP PUB NO 20150074363A1
SERIAL NO

14024240

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Abstract

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For dynamically adjusting write pacing, a calculation module calculates an interval as a maximum threshold for a primary volume divided by a first maximum pacing level for a first importance level. The calculation module further calculates a first pacing level as a number of record sets that have not been mirrored to a secondary volume divided by the interval. The first pacing level is set to the first maximum pacing level if the first pacing level is greater than the first maximum pacing level. The calculation module also selects a first pacing delay associated with the first pacing level from a delay table. A pacing module delays writes for a first channel command word writing to the primary volume by the first pacing delay.

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Patent Owner(s)

  • GLOBALFOUNDRIES INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Diel, Eduard A Tucson, US 7 56
Kalos, Matthew J Tucson, US 266 3412
McClure, Alan G Sahuarita, US 10 83
Mellgren, Carol S Tucson, US 115 789
Sanchez, Alfred E Tucson, US 21 262
Shackelford, David M Tucson, US 32 491
Stanley, Warren K Loveland, US 58 613

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