linux QOS 001 --- Hierachical token bucket theory
DefinitionsLet'sdefineHTB'sgoalformaly.Somedefinitionsfirst:ClasshasassociatedassuredrateAR,ceilrateCR,priorityP,levelandquantumQ.Itcanhasparent.WealsoknowvalueofactualrateorR.Itisrateofpacketflowleav