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:
Mar. 24, 2015
Filed:
Dec. 14, 2012
Bhaskar Bora, Karnataka, IN;
Mark J. Halstead, Holliston, MA (US);
Benoit J. Merlet, Chelmsford, MA (US);
Dharmesh Thakkar, Northborough, MA (US);
Bhaskar Bora, Karnataka, IN;
Mark J. Halstead, Holliston, MA (US);
Benoit J. Merlet, Chelmsford, MA (US);
Dharmesh Thakkar, Northborough, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Described are techniques for controlling a flow of I/O requests. R is received denoting a current maximum number of outstanding I/O requests allowed to be issued by a first data storage system to a second data storage system over a path. Assessment processing is performed to obtain a first performance value, a second performance value, and a third performance value, respectively, when the maximum number of outstanding I/O requests allowed to be issued by the first data storage system to the second data storage system over the path is R+delta1, R, and R−delta2 (delta1 and delta 2 are positive integer values). It is determined whether to update R in accordance with criteria including the first performance value, the second performance value and the third performance value.