Trace recording by logging influxes to a lower-layer cache based on entries in an upper-layer cache
US10496537B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 2018 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | May 5, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/885
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Trace recording based on recording an influx to a lower-level cache by reference to prior log data, based on knowledge of an upper-level cache. A computing device includes a plurality of processing units, a plurality of N-level caches, and an (N+i)-level cache that is a backing store for the N-level caches. Based on activity of a first processing unit, the computing device detects an influx of data to a first N-level cache. The computing device checks the (N+i)-level cache to determine if the data was already logged for a second processing unit. Based on the check, the computing device (i) causes the data to be logged for the first processing unit by reference to log data (i.e., when the data was already logged), or causes the data to be logged by value for the first processing unit (i.e., when the data was not already logged).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.