APPARATUS AND METHOD FOR SINGLE PASS ENTROPY DETECTION ON DATA TRANSFER
First Claim
1. An apparatus comprising:
- a memory unit configured to store an input data stream; and
a processor coupled to said memory unit, said processor configured to determine an entropy level for a portion of said input data stream and perform a data reduction operation responsive to said entropy level.
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Accused Products
Abstract
Embodiments of the present invention include a memory unit and a processor coupled to a memory unit. The processor is operable to group a plurality of subsets of data from an input data stream and compute a first hash value corresponding to a first grouped subset of data. Additionally, the processor is operable to detect a match between the first hash value and a second hash value stored in a hash table. Furthermore, the processor is also configured to monitor a hash value match frequency for the input data stream in which the processor is operable to increment a counter value responsive to a detection of the match and determine an entropy level for the input data stream based on the counter value relative to a frequent hash value match threshold. The processor can generate an instruction to either initialize performance of a data compression operation when the counter value meets or exceeds the frequent hash value match threshold or refrain from the performance of the data compression operation when the counter value fails to meet the frequent hash value match threshold.
13 Citations
20 Claims
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1. An apparatus comprising:
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a memory unit configured to store an input data stream; and a processor coupled to said memory unit, said processor configured to determine an entropy level for a portion of said input data stream and perform a data reduction operation responsive to said entropy level. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computer-implemented method to detect entropy of an input data stream, said method comprising:
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receiving an input data stream; determining an entropy level for a portion of said input data stream; and performing a data reduction operation responsive to said entropy level. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus comprising:
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means for storing an input data stream; and means for determining an entropy level for a portion of said input data stream using computed signatures and performing a data reduction operation responsive to said entropy level using a hash table. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification