kito4 commented on issue #17661:
URL:
https://github.com/apache/dolphinscheduler/issues/17661#issuecomment-3639265442
Can i write loadbalancer with CPU and ThreadPool Oversubscription ? In
DynamicWeightedRoundRobinWorkerLoadBalancer we have weights for each worker and
it is never more than 100 ! What if make possible weight exceed that value ?
Tasks may take longer individually, but the overall throughput for a group of
tasks could improve, especially when some resources are underutilized
Memory oversubscription may be risky; this feature is intended for CPU and
ThreadPool only.
private double calculateWeight(WorkerServerMetadata server) {
double load =
dynamicWeightConfigProperties.getCpuUsageWeight() *
server.getCpuUsage()
+
dynamicWeightConfigProperties.getMemoryUsageWeight() * server.getMemoryUsage()
+
dynamicWeightConfigProperties.getTaskThreadPoolUsageWeight()
* server.getTaskThreadPoolUsage();
load = load / 3.0;
double osFactor =
dynamicWeightConfigProperties.getOversubscriptionFactor();
double maxWeight = 100 * osFactor;
double weight = maxWeight - load;
return Math.max(weight, 0.0);
}
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