Oracle International Corporation

Milton Shih

John R Feehrer

Ramaswamy Sivaramakrishnan

Julia D Harper

Matthew Cohen

Kenneth Chan

Peter Dunlap

A method and system for processing data are disclosed. A processor, in response to executing a software program, may write an entry in a work queue. The entry may include an operation, and a location of data stored in an input buffer, and a location in an output buffer to write processed data. The processor may also generate a notification that at least one entry in the work queue is ready to be processed. The data transformation unit may assign the entry to a data transformation circuit, and retrieve the data from the input buffer using the location. The data transformation unit may also perform to the operation on the retrieved data to generate updated data, generate a completion message in response to completion of the operation, and store the updated data in an output buffer. An interface unit may relay transactions between the processor and the data transformation unit.

Hardware accelerated data processing operations for storage data

A method for sharing a hardware decompression engine, including performing a compression type check on a first data stream to determine a compression type of the first data stream, wherein the first data stream is compressed using one selected from a group consisting of a first compression type and a second compression type; wherein, when the first data stream is compressed with the second compression type: receiving the second compression type at a selector; converting the first data stream compressed with the second compression type into a second data stream of the first compression type; inputting the converted second data stream into the selector; and decompressing the converted second data stream using the hardware decompression engine capable of decompressing a data stream compressed using the first compression type. In other aspects, a system for sharing a hardware decompression engine and a computing system are provided.

Shared decompression engine

A method for a hardware decompression read pipeline, the method including determining a length and a distance of a first entity from a buffer; launching a first read request for reading a first data from the buffer; obtaining a second entity from the buffer; determining a distance of the second entity; calculating a new distance for the second entity; and decreasing a first counter by one for each cycle that data is read and returned from the buffer, wherein, when a first number of pending read data clock cycles in the first counter is less than a predetermined number of clock cycles and there is no read-after-write conflict: launching a second read request prior to completion of the first read request. In other aspects, a method for a hardware decompression write pipeline and systems for a hardware decompression read pipeline and a hardware decompression write pipeline are provided.

Decompression history buffer read/write pipelines

A method for hardware master/slave compression of a file, including resetting a counter; loading a first data portion of the file in a first buffer; loading a second data portion of the file in a second buffer; acquiring a first search string from the second buffer; performing a plurality of parallel searches for the acquired first search string in the first buffer; processing a plurality of results from the plurality of parallel searches; outputting a literal or a length-distance entity based on the plurality of results of the plurality of parallel searches for the acquired first search string; shifting the first buffer and the second buffer by a number of characters in a row; and acquiring a second search string from the second buffer of the file. In other aspects, a system for a hardware master/slave compression engine and a computing system for master/slave compression of a file are provided.

Growing community of inventors

Westford, MA, United States of America

Milton Shih