Method and apparatus for tracking variable speed microprocessor performance caused by power management in a logically partitioned data processing system
US7543161B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2004 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Jan 30, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/885
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A power level monitor and performance tracking tool are provided for correlating system performance with processor management events. When power management requires a change to the state of a microprocessor, software will be notified. Multiple layers of software may be notified, including a firmware level, an operating system, as well as applications. The performance tracking tool tracks the times of the power management events as well as their impact to the microprocessor performance. The performance tracking tool may then display or record the state changes to processor performance. These changes may be correlated against other system events to aid in determining system performance problems with respect to power management.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.