Intermittent component failure manager and method for minimizing disruption of distributed computer system
US5260945A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1991 |
| Grant date | Nov 9, 1993 |
| Priority date | — |
| Expiry date | Jun 26, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/445
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a distributed computer system having components which may fail intermittently, a fault monitor, coupled to one component, detects whether that component is working. Whenever the fault monitor detects that the component has failed, i.e., changed from working to broken status, the status filter transmits without delay a "broken" signal. Whenever the fault monitor detects that the component has changed from broken to working status, however, the status filter transmits a "working" signal only after a recovery time interval corresponding to a computed skepticism level, and only if the component does not fail during that recovery time interval. The status filter increases the computed skepticism level, and redetermines the recovery time interval in accordance therewith, each time that the component fails after the status filter has transmitted a "working" signal. The status filter decreases the computed skepticism level, and redetermines the recovery time interval in accordance therewith, when, after the status filter has transmitted a "working" signal, the component does not fail for at least a defined interval of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.