Patent · US Active

System for correlation of operating system and hardware trace events

US10430313B2 · kind B2 · utility

0Cited by

1References

21Claims

0Family size

Assignee

Intel Corporation · US

Inventors

Norbert Schulz · Ichenhausen, DE
Frank Penczek · Ulm, DE
Joseph E. Wylder · Loomis, US
Eran Geva · Haifa, IL

Key dates

Filing date	Sep 24, 2015
Grant date	Oct 1, 2019
Priority date	—
Expiry date	Jan 29, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG06F2201/835
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Generally, this disclosure provides systems, methods and computer readable media for correlation of OS and hardware events to provide a corrected trace sequence. A system may include a processor configured to receive an OS event at a first time, generate a first timestamp based on a first clock associated with the OS, buffer the OS event until a second time, and generate a second timestamp based on the first clock. The system may also include a trace generation circuit configured to receive the OS event from the processor after the second time and generate a third timestamp based on a second clock associated with the trace generation circuit. The system may further include a trace correction circuit configured to calculate a corrected timestamp for the OS event based on differences between the first, second and third timestamps and further based on the relative frequency between the first and second clocks.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.