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:
Aug. 29, 2017
Filed:
Mar. 31, 2016
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Philippe Armangau, Acton, MA (US);
Bruce E. Caram, Hudson, MA (US);
Christopher A. Seibel, Walpole, MA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
A technique for controlling acceptance of host application data into a data log in a data storage system includes selectively accepting or refusing newly arriving host data into the data log based on a comparison between an oldest entry in the data log and an age threshold. The age threshold is dynamically updated based on system heuristics. As long as the oldest log entry is younger than the age threshold, the data log continues to accept newly arriving host application data, acknowledging IO requests to host applications as the data specified in those requests is entered into the log. However, when the oldest log entry is older than the age threshold, new log entries are temporarily refused entry into the data log. Instead, newly arriving data are placed in a pending list, where they are kept until the data log is again accepting new log entries.