RATE MATCHING TECHNIQUE FOR BALANCING SEGMENT CLEANING AND I/O WORKLOAD

RATE MATCHING TECHNIQUE FOR BALANCING SEGMENT CLEANING AND I/O WORKLOAD

A rate matching technique may be configured to adjust a rate of cleaning of one or more selected segments of the storage array to accommodate a variable rate of incoming workload processed by a storage input/output (I/O) stack executing on one or more nodes of a cluster. An extent store layer of the...

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Hauptverfasser: SWAMINATHAN, Manish, MCCLANAHAN, Edward D, PATEL, Dhaval, MUTH, John
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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creator SWAMINATHAN, Manish
MCCLANAHAN, Edward D
PATEL, Dhaval
MUTH, John
description A rate matching technique may be configured to adjust a rate of cleaning of one or more selected segments of the storage array to accommodate a variable rate of incoming workload processed by a storage input/output (I/O) stack executing on one or more nodes of a cluster. An extent store layer of the storage I/O stack may clean a segment in accordance with segment cleaning which, illustratively, may be embodied as a segment cleaning process. The rate matching technique may be implemented as a feedback control mechanism configured to adjust the segment cleaning process based on the incoming workload. Components of the feedback control mechanism may include one or more weight schedulers and various accounting data structures, e.g., counters, configured to track the progress of segment cleaning and free space usage. The counters may also be used to balance the rates of segment cleaning and incoming I/O workload, which may change depending upon an incoming I/O rate. When the incoming I/O rate changes, the rate of segment cleaning may be adjusted accordingly to ensure that rates are substantially balanced.
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subjects CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
title RATE MATCHING TECHNIQUE FOR BALANCING SEGMENT CLEANING AND I/O WORKLOAD
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