Method and device for checking false sharing in data block deletion using a mapping pointer and weight bits
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United States of America Patent
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Jun 9, 2020
Grant Date -
Mar 30, 2017
app pub date -
Sep 20, 2016
filing date -
Sep 25, 2015
priority date (Note) -
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Abstract
A method and device for checking false sharing in deletion of a data block are disclosed. The method includes setting weight bits and a weight reset bit in a mapping pointer (MP) pointing to the data block, wherein the weight reset bit is configured to define whether a weight indicated by the weight bits has been increased; and determining, based on the weight bits and the weight reset bit, whether false sharing occurs. The method determines whether false sharing occurs accurately and with low cost by using a computable formula. All information for such computable formula comes from in-memory MP, with no need to load any extra metadata, for example, with no need to access Block Meta Data. The method also considers a scenario where a weight increase occurs during a weight split and merge with other pointers.
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