Symmetric multi-processor system

Details Symmetric multi-processor system Symmetric multi-processor system

2011-08-09

2011-08-09

An, Meng A (Department: 2195)

Electrical computers and digital processing systems: virtual mac

Task management or control

Process scheduling

C718S107000, C718S108000, C709S214000, C709S215000, C719S312000, C719S313000

Reexamination Certificate

active

07996843

ABSTRACT:
The present invention relates generally to computer operating systems, and more specifically, to operating system calls in a symmetric multiprocessing (SMP) environment. Existing SMP strategies either use a single lock or multiple locks to limit access to critical areas of the operating system to one thread at a time. These strategies suffer from a number of performance problems including slow execution, large software and execution overheads and deadlocking problems. The invention applies a single lock strategy to a micro kernel operating system design which delegates functionality to external processes. The micro kernel has a single critical area, the micro kernel itself, which executes very quickly, while the external processes are protected by proper thread management. As a result, a single lock may be used, overcoming the performance problems of the existing strategies.

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