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.

Date of Patent:
Jan. 16, 2018

Filed:

Apr. 26, 2017
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Michael T. Benhase, Tucson, AZ (US);

Lokesh M. Gupta, Tucson, AZ (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/46 (2006.01); G06F 12/128 (2016.01); G06F 3/06 (2006.01); G06F 12/0808 (2016.01);
U.S. Cl.
CPC ...
G06F 12/128 (2013.01); G06F 3/061 (2013.01); G06F 3/0631 (2013.01); G06F 3/0653 (2013.01); G06F 3/0655 (2013.01); G06F 3/0688 (2013.01); G06F 12/0808 (2013.01); G06F 2212/621 (2013.01); G06F 2212/69 (2013.01);
Abstract

For thresholding task control blocks (TCBs) for staging and destaging, a first tier of TCBs are reserved for guaranteeing a minimum number of TCBs for staging and destaging for storage ranks. An additional number of requested TCBs are apportioned from a second tier of TCBs to each of the storage ranks based on a scaling factor that is calculated at predefined time intervals. The scaling factor is multiplied by a total number of a plurality of requests from each of the storage ranks for the TCBs from the second tier of TCBs for determining a maximum number of the TCBs to be allocated to each of the storage ranks.


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