With the users and types of application on cloud computing platform increasing, it becomes a critical problem about how to use resources in system effectively ensure service level agreements (SLA). The load balancing algorithm is an important means achieve efficient utilization resources. This paper presents dynamic based virtual machine migration under environment. proposed trigger strategy fractal methods. determines timing through forecasting determine migration, which can avoid peak...

A thin dielectric plate can support conventional slab modes such as leaky Fabry-Perot, guided waves and radiation modes. When the is coated on a metallic subwavelength disk array, it result in new confined modes, hereby named 'disks scattering modes' (DSSMs). By use of terahertz time-domain spectroscopy system, we experimentally verify existence two types DSSMs range: one refer to highly disks Fabry-Perot-like (DSFPMs) other as, weakly radiation-like (DSRMs). Spectral characteristics these...

It is well-known that with the explosive growth of data, age big data has arrived. How to save huge amounts great importance both industry and academia. This paper puts forward a solution based on coding technologies in system store lot cold data. By studying existing systems, we can not only maintain system's reliability, but also improve security utilization storage systems. Due remarkable reliability space saving rate technologies, importing schema systems becomes prerequisite. In our...

With the application of internet things technology, fog computing has provided and storage services near bottom network. It can solve problem rapid response bandwidth consumption delay sensitive applications at edge local network as a highly virtualized platform. However, in case large scale service requests, if job scheduling cannot be effectively solved, it will increase delay, reduce resource utilization user satisfaction. In this paper, we have improved basic ant colony optimization...

In modern replication storage systems where data carries two or more multiple copies, a primary group of disks is always up to service incoming requests while other are often spun down sleep states save energy during slack periods. However, since new writes cannot be immediately synchronized onto all disks, system reliability degraded. This paper develops PERAID, high-performance, energy-efficient system, which aims improve both performance and efficiency without compromising reliability. It...

To protect data in cloud storage, fault tolerance and efficient recovery become very important. Recent studies have developed numerous solutions based on erasure code techniques to solve this problem using functional repairs. However, there are two limitations address. The first one is consistency since the Encoding Matrix (EM) different among clouds. other repairing bandwidth, which a concern for most of us. We addressed these problems from both theoretical practical perspectives. BMCloud,...

This paper researches on the cloud computing technology systematically and comprehensively, proposes a scheduling algorithm in environment based Berg model, which is sociological justice distribution theory. adapts to commercialization virtualization features of computing, differs from traditional job algorithm's character - focusing efficiency, establishes dual fairness constraints under environment. For tasks with multiple Qos properties, this gives generally expect processing by applying...

With the rapid development of network, a huge amount data will be generated. Existing technologies usually use cloud computing to process data. However, when all users need transferred for processing, it cause long transmission delay due distance between and center. Fog connects network edge devices downward center upward, which greatly shortens user is an effective way solve problems high delay, bandwidth bottleneck security. In this paper, we have developed optimization method, establish...

Traditional caching strategy is mainly based on the memory cache, taking read-write speed as its ultimate goal. However, with emergence of SSD, design ideas traditional cache are no longer applicable. Considering characteristics and times limit erasing, SSD taken into account far possible at same time designing strategy. In this paper, flexible adaptive proposed, called FAC, which gives full consideration to itself, combines ideas, then maximizes role has played. The core mechanism dynamic...

It is well-known that erasure codes, such as Reed-Solomn (RS) and Cauchy Reed-Solumn Codes (CRS), have played an important roles in distributed storage system to both industry academic. While RS CRS codes provide significant savings space, they will decrease systems performance while encoding decoding. In this paper we developed optimized algorithm named CCRS (Changed CRS) based on coding technology, which can not only protect the system's reliability, but also improve utilization of space....

Abstract With the development of Internet things (IoT) technology, fog computing has gradually come into people’s vision because characteristics real-time and low delay. Providing storage services at edge network, can meet needs users in delay-sensitive applications as a highly virtualized platform. Resource scheduling plays an important role computing, it requirements customers improve quality service. However, if largescale service requests not solve resource problem effectively, will...

Erasure codes, such as Reed-Solomn (RS) and CRS Codes, are being extensively deployed in distributed storage system since they offer significantly higher reliability than data replication methods at much lower overheads. But RS codes always impose a huge burden on system's performance while encoding decoding when provide significant savings space. This paper puts forward an optimized algorithm named ICRS (Improved CRS) based erasure coding technology, which is committed to improve the...

This article first introduce the Core Architecture and operational mechanism of cloud computing HADOOP platform, then put forward technical architecture data mining platform Based on HADOOP. After a thorough understanding to Map Reduce programming pattern, HSPRINT algorithm is realized in decision tree. At last effectiveness verified through experiments.

With the number of nodes increasing in scale, requirements storage space enlarge sharply distributed systems. Failure‐tolerance schemes such as Reed–Solomon codes (RS short) and Cauchy (CRS are used to save space. However, these failure‐tolerance severely degrade system performance. In this paper, we propose optimal RS (OptRS based on CRS that can offer better performance for encoding decoding well maximizing utilization OptRS speed up matrix computation which is regarded most important...