Electrical computers and digital processing systems: multicomput – Computer network managing – Network resource allocating
Patent
1997-06-06
2000-09-26
Rinehart, Mark H.
Electrical computers and digital processing systems: multicomput
Computer network managing
Network resource allocating
709100, 709104, 709105, 709220, 709225, 709229, 39518314, 395704, 711133, 711134, G06F 1300, G06F 1342, G06F 15163
Patent
active
061253944
ABSTRACT:
A computer system in which resources are selected or purged based on extremes of utilization (i.e., by virtue of having either the highest or lowest utilization ranking in a group of resources) effectively handles newly added resources whose initial utilization rankings do not reflect their true popularity (or lack thereof). New resources are arbitrarily assigned an initial utilization ranking that is in the middle of the range of utilization rankings--e.g., preferably the median or, more preferably, the mean--of other members of the group. Therefore, the new resource is not immediately either selected or purged, because its initial utilization ranking is not at either extreme, and eventually, after not too long an interval, the utilization ranking reflects the true conditions, and the resource will be selected or purged, or not, as the statistics may warrant. In the meantime, other resources in the group are selected or purged based on their actual statistics which reflect the true conditions closely enough.
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Keith Lopez, MACH 3 Kernel Principles, Open Software Foundation and Carngie Mellon University, Jul. 15, 1992.
David L. Black, The Mach cpuserver: An Implementation of Processor Allocation, Aug. 14, 1990.
AT&T Corporation
Rinehart Mark H.
Vaughn, Jr. William C.
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