It is well-known that the power-of-d choices routing algorithm maximizes throughput and heavy-traffic optimal in load balancing systems with homogeneous servers. However, if servers are heterogeneous, optimality does not hold general. We find necessary sufficient conditions for of when we prove almost same to show optimality. Additionally, generalize condition a larger class policies.

In the present paper, mathematical modeling for analyzing a Markovian queueing system with two heterogeneous servers and working vacation has been demonstrated. Keeping in view queueing situations in real life problems, here we consider service policy that initially both the heterogeneous servers take vacation when there are no customers waiting for service in the queue; however, after this ser...

Finding information in large scale autonomous heterogeneous databases is an issue that has been virtually unexplored in database research. We describe a new approach for nding information in a large scale network of autonomous and heterogeneous databases. In our scheme, no a priori knowledge of the database schemas or the space of information is necessary to locate information. The system relie...

In this paper, major goal is to achieve distributed environment configuring heterogeneous system framework using existing machines and high-end workstations as servers without involving extra cost. Feasibility of proposed system network is main concern in this paper having cost minimization. Data replication is responsible for enhancing dynamic scheduling in run-time. Dynamic scheduling is goin...

In August 1998, an interviewer for an Indonesian news weekly asked Amien Rais, a major figure in national Islamic politics and founder of the National Mandate Party (Partai Amanat Nasional), why he had altered the name of the party from the originally proposed Partai Amanat Bangsa. He replied, “We chose Partai Amanat Nasional because it would be better translated into English as National Mandat...

A number of recent technological trends have made data intensive applications such as continuous media (audio and video) servers a reality. These servers store and retrieve a large volume of data using magnetic disks. Servers consisting of multiple nodes and large arrays of heterogeneous disk drives have become a fact of life for several reasons. First, magnetic disks might fail. Failed disks a...

The Internet has recently been evolving from homogeneous congestion control to heterogeneous congestion control. Several years ago, Internet traffic was mainly controlled by the traditional AIMD algorithm, whereas Internet traffic is now controlled by many different TCP algorithms, such as AIMD, BIC, CUBIC, and CTCP. However, there is very little work on the performance and stability study of t...

An easily applicable algorithm to solve problems involving bulk-arrival queues with a breakdown of one of the heterogeneous servers in case of steady state is introduced. A Monte Carlo study for numerically finding the limiting distribution of the number in the system for the bulk arrival, multi-server queueing model (M[x]/EK/C; C1/FCFS) with heterogeneous servers is presented. The system consi...

We propose in this paper to study the energy-, thermaland performance-aware resource management in heterogeneous datacenters. Witnessing the continuous development of heterogeneity in datacenters, we are confronted with their different behaviors in terms of performance, power consumption and thermal dissipation: Indeed, heterogeneity at server level lies both in the computing infrastructure (co...