Electrical computers and digital processing systems: virtual mac – Task management or control – Process scheduling
Reexamination Certificate
2005-03-08
2010-06-08
An, Meng-Ai (Department: 2195)
Electrical computers and digital processing systems: virtual mac
Task management or control
Process scheduling
C707S793000, C710S200000
Reexamination Certificate
active
07735089
ABSTRACT:
A method of deadlock detection is disclosed which adjusts the detection technique based on statistics maintained for tracking the number of actual deadlocks that are detected in a distributed system, and for which types of locks are most frequently involved in deadlocks. When deadlocks occur rarely, the deadlock detection may be tuned down, for example, by reducing a threshold value which determines timeouts for waiting lock requests. When it is determined that actual deadlocks are detected frequently, the processing time for deadlock detection may be reduced, for example, by using parallel forward or backward search operations and/or by according higher priority in deadlock detection processing to locks which are more likely to involve deadlocks.
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An Meng-Ai
Hickman Palermo & Truong & Becker LLP
Lee Adam
Oracle International Corporation
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