POST MORTEM PROGRAM FAILURE ANALYSIS IN A TIME-SHARING ENVIRONMENT,
Abstract
As background a brief review is given of post mortem program failure analysis (PMA) as implemented on second generation computer systems. Then the impact of some special characteristics of a time-sharing environment (TSE) on PMA is discussed, namely: continuous service to many users, sharing of programs and data, dynamic relocation, symbolic addressing, and elaborate protection schemes. General design principles for PMA operating within the framework of a deceased program are established, and some specific advantages due to the TSE are pointed out. Implications for the design of the operating system and the hardware of a TSE are derived, namely, the need for a symbolic instruction counter of a symbolic page address register is demonstrated, and necessary more general protection mechanisms are proposed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1969
- Accession Number
- AD0692616
Entities
People
- Rudolf Bayer
Organizations
- Boeing