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. 03, 2004
Filed:
Dec. 14, 1999
Albert Andre Asselin, Holly Springs, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and system for balancing deferred procedure queues in multiprocessor computer systems provides a greater use of multiprocessing power for the handling of hardware requests in a device driver. By creating a number of DPC (deferred procedure call) objects and work lists greater than or equal to the number of processors, a device driver can queue work items to the work lists in a round-robin fashion and maintain a queued DPC object for each work list containing work items. This balances processor assignment to DPC execution, providing enough work lists and associated DPC objects to the device driver so that each processor may concurrently perform DPC tasks for the device, or so that the DPC tasks are balanced with other system or application tasks each processor is assigned.