Power effective file layout with application support in virtualized environment

Yamaguchi, Saneyasu; Yagai, Shunsuke

doi:10.1109/iccsce.2015.7482220

Cited by 4 publications

(2 citation statements)

References 17 publications

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“…However, this study does not consider seek distance and time within an HDD and does not discuss intra-HDD optimization; therefore, the obtained performance is less than that of the methods proposed in this paper. In [33], seek distance and time are discussed; however, the study focuses only on applications with homogeneous loads. Thus, this method cannot balance the load of each HDD so as to avoid severe performance reduction in cases with heterogeneous application sizes.…”

Section: Application-level Power Savingsmentioning

confidence: 99%

Power-Effective File Layout Based on Large Scale Data-Intensive Application in Virtualized Environment

Yagai

Oguchi

Nakano

et al. 2017

IEICE Trans. Inf. & Syst.

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SUMMARYIn data centers, large numbers of computers are run simultaneously. These computers consume an enormous amount of energy. Several challenges related to this issue have been published. An energyefficient storage management method that cooperates with applications was one effective approach. In this method, data and storage devices are managed using application support and the power consumption of storage devices is significantly decreased. However, existing studies do not take the virtualized environment into account. Recently, many data-intensive applications have been run in a virtualized environment, such as the cloud computing environment. In this paper, we focus on a virtualized environment wherein multiple virtual machines run on a physical computer and a data intensive application runs on each virtual machine. We discuss a method for reducing storage device power consumption using application support. First, we propose two storage management methods using application information. One method optimizes the inter-HDD file layout. This method removes frequently-accessed files from a certain HDD and switches the HDD to power-off mode. To balance loads and reduce seek distances, this method separates a heavily accessed file and consolidates files in a virtual machine with low access frequency. The other method optimizes the intra-HDD file layout, in addition to performing inter-HDD optimization. This method places frequently accessed files near each other. Second, we present our experimental results and demonstrate that the proposed methods can create sufficiently long HDD access intervals that power-off mode can be used, and thereby, reduce the power consumption of storage devices.

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Section: Application-level Power Savingsmentioning

confidence: 99%

Power-Effective File Layout Based on Large Scale Data-Intensive Application in Virtualized Environment

Yagai

Oguchi

Nakano

et al. 2017

IEICE Trans. Inf. & Syst.

Self Cite

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“…For example, the studies of Refs. [7], [8], [9] demonstrated that the method was effective for hard disk drives 1 Kogakuin University, Shinjuku, Tokyo 163-8677, Japan 2 R&D Center for Smart Mobility, Kyushu University, Fukuoka 819-0395, Japan 3 Kyushu University, Fukuoka 819-0395, Japan 4 Ochanomizu University, Bunkyo, Tokyo 112-8610, Japan a) sane@cc.kogakuin.ac.jp (HDDs).…”

Section: Introductionmentioning

confidence: 99%

BET Estimation on Power Saving by Intermittent Disabling Network Interface on Android

Murakami

Kamiyama

Fukuda

et al. 2019

Journal of Information Processing

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The large power consumption of smartphones is an important issue. Smartphone operating systems such as Android have a function that invokes an application without user's operation. That is, an application runs and may communicate using its network interface in the screen-off state without user's operation. This behavior consumes large batteries. Temporarily disabling its network interface is one of the promising methods for reducing power consumption in the screen-off state. Less power is consumed while its network interface is disabled, but processes of disabling and enabling its network interface consume battery. Therefore, it is necessary to keep the interface disabled for a sufficiently long period such that the power consumption decreased by disabling the network interface exceeds the power consumption increased by the transition process of disabling and enabling the interface. In this paper, we focus on a method of reducing power consumption in the screen-off state by repeating to disable and enable the network interface and discuss estimation of its Break-Even Time (BET) with which the sizes of increased and decreased power consumption are the same. We then propose two methods for estimating BET. One method estimates BET by integrating the electric current. The other method estimates it according to the average electric current. We evaluate the methods with practical applications and Android devices and show that the method based on the average electric current can estimate BET accurately. In the case of our experiments, the difference between the actual and estimated BETs was less than 16.4%.

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Saving power consumption of smartphones in the screen-off state with disabling the Wi-Fi

Murakami

Kurihara

Fukuda

et al. 2018

2018 IEEE International Conference on Consumer Electronics (ICCE)

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Power effective file layout with application support in virtualized environment

Cited by 4 publications

References 17 publications

Power-Effective File Layout Based on Large Scale Data-Intensive Application in Virtualized Environment

Power-Effective File Layout Based on Large Scale Data-Intensive Application in Virtualized Environment

BET Estimation on Power Saving by Intermittent Disabling Network Interface on Android

Saving power consumption of smartphones in the screen-off state with disabling the Wi-Fi

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