The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 26, 2006
Filed:
Dec. 06, 2001
Ruben Michel, Hopkinton, MA (US);
Ron Arnan, Brookline, MA (US);
David Desroches, Methuen, MA (US);
Victoria Dubrovsky, Westboro, MA (US);
Ruben Michel, Hopkinton, MA (US);
Ron Arnan, Brookline, MA (US);
David DesRoches, Methuen, MA (US);
Victoria Dubrovsky, Westboro, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Described are techniques for performing compression and decompression of statistical data. This data may be used in connection with performing optimizations. A delta value for each statistic is determined representing a difference between a current value and a previous value. Delta values are stored in a statistics table in a compressed form using a monotonic compression scheme. Small tables are used to determine decompressed values estimating the observed values. Statistical information is stored and represented in a statistics table and an events table. Statistical information is selectively fetched and loaded into memory from a storage device. Indexing techniques are used to force physical continuity of the rows of the statistics table on a storage device in accordance with a specified retrieval order.