Method and apparatus for load balancing of distributed processing units based on performance metrics
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United States of America Patent
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Jun 14, 2011
Grant Date -
May 26, 2005
app pub date -
Nov 25, 2003
filing date -
Nov 25, 2003
priority date (Note) -
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Abstract
Performance parameters are obtained for distributed processing units. The performance parameters include a utilization value, of each distributed processing unit. Respective weights are obtained for the distributed processing units by applying a mapping function to the utilization values. The respective weights are used for weighted round-robin load balancing of work requests upon the distributed processing units. In one implementation, a set of utilization values of the processing units are collected in response to a periodic heartbeat signal, a set of weights are produced from the set of utilization values, a distribution list is produced from the set of weights, and the distribution list is randomized repetitively for re-use during the heartbeat interval.
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