An extended power consumption-based algorithm for communication-based applications

Abstract

In information systems, it is critical to reduce the total electrical power consumption of computers and networks in order to realize the eco society. In our previous studies, a pair of PCB (power consumption-based) and TRB (transmission rate-based) algorithms are proposed to select one of servers so that the total power consumption of the servers is reduced for communication-based applications. In addition, the PCB algorithm is shown to be more useful for reducing the total power consumption than the TRB one. However, we consider only how much amount of electric power a server is expected to consume to transmit a file to a new requesting client in the PCB algorithm. Here, the server might be transmitting files to other clients. Therefore, we have to estimate the power consumption to transmit a file to a new client by considering how much power consumption the server would spend to transmit files to other clients. In this paper, we newly propose an extended power consumption-based (EPCB) algorithm by improving the PCB algorithm by taking into consideration how much power a server consumes to transmit files to every requesting client. In the evaluation, we show the total power consumption of servers can be more reduced by the EPCB algorithm than the PCB and TRB algorithms.Keywords Power consumption model Á An extended power consumption-based (EPCB) algorithm Á Power consumption-based algorithm Á Transmission rate-based algorithm Á Communication-based applications 1 Introduction

Transmission Power Consumption Laxity-Based (TPCL) Algorithm for Communication Type Applications

“…In the proportional allocation way, the clients c 1 , c 2 , and c 3 are allocated with 6 / 7 = 0.86, 12 / 7 = 1.71, and 24/7 = 3.43 [Mbps], respectively, as shown in Figure 3 (2). On the other hand, in the EPCB algorithm [19], [22], the unused transmission rate of the client c 1 (= 1 [Mbps]) can be used for the client c 3 as shown in the Figure 3 (3). That is, the clients c 1 , c 2 , and c 3 receive the files f 1 , f 2 , and f 3 at rates 1, 2, and 3 [Mbps], respectively.…”

“…As discussed in the preceding section, the transmission rate tr ts (τ ) is allocated to each current processes p ts by the EPCB algorithm [19], [22]. At time τ when a process p ts starts on a server s t , the transmission laxity lt ts (τ ) is |f s |.…”

“…The transmission power consumption (T P C) model of a server to transmit files is discussed in the papers [14], [19]. In the TPC model, the electric power consumption of a server to transmit files to clients depends on the total transmission rate of the server.…”

“…In the TPC model, the electric power consumption of a server to transmit files to clients depends on the total transmission rate of the server. In the paper [19], the approximated linear function to show how much a server consumes the electric power for transmission rates is derived from experimental studies of file transfer between servers and clients. A server is equipped with cooling devices like fans on CPU and server's case.…”

“…In the paper [19], the extended power consumptionbased (EP CB) algorithm is discussed to reduce the total power consumption in a cluster of servers for computation type applications. However, the ETPC model is not considered in the EPCB algorithm, i.e.…”