Method and apparatus for measuring performance during speculative execution
US7757068B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2007 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Aug 17, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/885
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
One embodiment of the present invention provides a system for measuring processor performance during speculative-execution. The system starts by executing instructions in a normal-execution mode. The system then enters a speculative-execution episode wherein instructions are speculatively executed without being committed to the architectural state of the processor. While entering the speculative-execution episode the system enables a speculative execution monitor. The system then uses the speculative execution monitor to monitor instructions during the speculative-execution episode to record data values relating to the speculative-execution episode. Upon returning to normal-execution mode, the system disables the speculative execution monitor. The data values recorded by the speculative execution monitor facilitate measuring processor performance during speculative execution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.