Migrating threads across NUMA nodes using corresponding page tables and based on remote page access frequency
US9183053B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2014 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Feb 11, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/2542
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Implementations provide for tracking memory accesses to optimize processor task placement is disclosed. A method includes creating a page table (PT) hierarchy associated with a thread, wherein the PT hierarchy comprises identifying information of memory pages and access bits corresponding to each of the memory pages, setting the respective access bit of one or more of the memory pages accessed by the thread while the thread is executing, collecting access bit information from the PT hierarchy associated with the thread, wherein the access bit information comprises the set access bits in the PT hierarchy, determining, in view of the collected access bit information, memory access statistics for the thread, and utilizing, during runtime of the thread, the memory access statistics for the thread in a determination of whether to migrate the thread to another processing device during the runtime of the thread.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.