Martin Joni Watson

US Patent:

59601817, Sep 28, 1999

Filed:

Dec 22, 1995

Appl. No.:

8/577956

Inventors:

M. Yahya Sanadidi - Santa Monica CA
Martin Cameron Watson - Los Angeles CA
Richard R. Muntz - Pacific Palisades CA

Assignee:

NCR Corporation - Dayton OH

International Classification:

G06F 9455

US Classification:

395500

Abstract:

A computer performance modeling system is provided. The modeling system includes a first and a second submodel which simulate system operations of a particular system component in minute and simple detail, respectively. A performance analysis mechanism is operatively coupled to the first and the second submodel to execute a simulation of the particular system component using the first and the second submodel. The performance analysis mechanism has a switching device for switching between the first and the second submodel during the simulation at a predetermined point in the execution of the simulation. In an alternative embodiment, the second submodel derives a specific behavior from simulation statistics collected by the first submodel. Also, the performance analysis mechanism executes a simulation of a system model having several of the particular system components by using a plurality of the first and the second submodels. A method for modeling computer performance also is provided.

US Patent:

59785764, Nov 2, 1999

Filed:

Apr 17, 1998

Appl. No.:

9/062252

Inventors:

M. Yahya Sanadidi - Santa Monica CA
Martin Cameron Watson - Los Angeles CA
Richard R. Muntz - Pacific Palisades CA

Assignee:

NCR Corporation - Dayton OH

International Classification:

G06F 9455

US Classification:

39550043

Abstract:

A computer performance modeling system is provided. The modeling system includes a first and a second submodel which simulate system operations of a particular system component in minute and simple detail, respectively. A performance analysis mechanism is operatively coupled to the first and the second submodel to execute a simulation of the particular system component using the first and the second submodel. The performance analysis mechanism has a switching device for switching between the first and the second submodel during the simulation at a predetermined point in the execution of the simulation. In an alternative embodiment, the second submodel derives a specific behavior from simulation statistics collected by the first submodel. Also, the performance analysis mechanism executes a simulation of a system model having several of the particular system components by using a plurality of the first and the second submodels. A method for modeling computer performance also is provided.