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:
Feb. 11, 1992
Filed:
Aug. 26, 1988
Michael A Salsburg, West Chester, PA (US);
Unisys Corporation, Detroit, MI (US);
Abstract
A method of evaluating and predicting the performance of an I/O disk system comprised of one or more disk controllers and cooperating disk units using a simulation model containing a stact constructed such that delays are formulated as sets of stochastic processes. The simulation model includes at least one statistical submodel and has delay parameters which are settable in accordance with a selectable I/O disk configuration. The simulation model is driven by a selectable I/O workload snapshot grouped into I/O batches. The simulation model provides both overall and batch output data in response to the I/O workload snapshot. Provision is also made for the simulation model to take into account the presence of cache storage in the selected I/O configuration.