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In-memory storage has the benefits of low I/O latency and high I/O throughput. Fast failure recovery is crucial for large-scale in-memory storage systems, bringing network-related challenges, including false detection due to transient network problems, traffic congestion during the recovery, and top-of-rack switch failures. In order to achieve fast failure recovery, in this paper, we present CubicRing,...
In this project we introduce an energy-aware processing model used for balancing the load of docker container and job scaling using docker(1). The approach used is to create an energy optimal regime within which the containers operate. An important strategy for energy reduction is concentrating the load on the containers. When the load increases, then by api call a new container can be spawned which...
RAM-based storage aggregates the RAM of thousands of commodity servers in data center networks (DCN) to provide extremely low I/O latency and high I/O throughput. In order to achieve fast failure recovery, MemCube exploits network proximity to restrict failure detection and recovery within 1-hop range. However, previous design is applicable only to the BCube network, which limits the usage of RAM-based...
Solid State Drives (SSDs) have become popular for mobile devices and PCs nowadays due to their advantages compared with conventional hard disk drives. However, they suffer from endurance problems. An effective approach to increase the endurance of an SSD is to improve the management algorithm of the RAM buffer, a cache-like structure inside the SSD. There are several previous studies of RAM buffer...
This project arises from the need to redesign the main technological infrastructure of the mining company. Current centralized infrastructure is obsolete and is no longer reliable and productive for the company. Currently, it is not possible for the network to facilitate the design of new technological solutions (installation of new servers, virtualization, storage networks, the configuration of advanced...
Microservers (embedded devices) with built-in sensors and network connectivity have become increasingly pervasive and their computational capabilities continue to be improved. Many works present that a heterogeneous cluster with the low-power microservers and high-performance nodes can provide competitive performance efficiency. However, they make simple modifications in existing distributed systems...
This work investigates factors that can impact the elasticity of bare-metal resources. We analyse data from a real bare-metal deployment system to build a deployment time model, which is used to evaluate how provisioning time impacts the reservation of bare-metal resources. Climate/Blazar, a reservation framework designed for OpenStack, is discussed. Simulation results show that reservations can help...
The rate of data growth is expected to propel. People and things continue to generate data, some of which are then transmitted, stored and analyzed. Stored data pose a great value to those who have access to them — but only if the data can be accessed and analyzed in a timely manner. For many interactive applications, traditional storage systems built with rotating magnetic media (hard drives) fall...
In this paper, we studied for the transmission of message and voice using CCNx that is one of the Content Centric Network(CCN) projects. CCN is considered as a way to solve the explosive growth of Internet traffic. In order to apply CCN to the common services that are widely used, we developed applications that send message and voice. The application can operate without a separate server by using...
One of the mechanisms to achieve energy efficiency in virtualized/cloud environments is consolidation of workloads on an optimal number of servers and switching-off of idle or underutilized servers. Central to this approach is the migration of virtual machines at runtime. In this paper we investigate the cost (migration time) of virtual machines migration. We shall show that migration time exponentially...
Consolidation of Virtual Machines (VMs) on the minimum number of physical servers has been recognized as a very efficient approach to increase the efficiency of virtualized data centers and save energy, as consolidation allows unloaded servers to be switched off or used to accommodate more load. The problem is so complex that centralized and deterministic solutions are useless in large data centers...
Solid-state drives (SSDs) made of flash memory are widely utilized in enterprise servers nowadays. Internally, the management of flash memory resources is done by an embedded software known as the flash translation layer (FTL). One important function of the FTL is to map logical addresses issued by the operating system into physical flash addresses. The efficiency of this address mapping in the FTL...
Virtualisation is a prevalent technology in current computing. Virtualisation can reduce hardware costs by server consolidation, implement "green computing" by reducing power consumption and is an underpinning process for cloud computing enabling the creation of a range of virtual networks and virtual supercomputers. This paper presents performance measurements for a cloning system known...
In recent years, significant research has been conducted to boost the performance and increase the reliability of high performance computing (HPC) clusters. As the number of compute nodes in modern HPC clusters continues to grow, it is critical to design clusters with low power consumption and low failure rate. In particular, it is widely known that the internal disk drives of compute nodes (in the...
This paper focuses on performance evaluation of serving nodes responsible for executing web applications requests. A scalability mechanism that will be discussed throughout this paper is; memcached, an object caching system that could speed up throughput of web applications whereby it reduces the burden of database load. In this research, we assessed memcached behavior on how it affects other nodes...
In cloud computing environment, virtual machine technology is used as a means of flexibly assigning workloads to real machines based on the workloads' static profiles. Though this technology aims at flexible and dynamic resource sharing, memory is underutilized in cloud environments. We propose a virtual swap management mechanism (VSMM) that enables flexible and dynamic memory sharing via a local...
On a multi-socket architecture with load below peak, as is often the case in a server installation, it is common to consolidate load onto fewer sockets to save processor power. However, this can increase main memory power consumption due to the decreased total cache space. This paper describes inter-socket victim cacheing, a technique that enables such a system to do both load consolidation and cache...
Solid-state drives (SSDs) based on NAND flash are widely used for various server applications. Multimedia storage devices differ significantly from traditional storage devices in that the user files are accessed in a sequential read manner while metadata are updated frequently. In this paper, we propose a new flash translation layer (FTL) scheme called the filtering FTL (FFTL) for multimedia storage...
Networking devices today consume a non-trivial amount of energy and it has been shown that this energy consumption is largely independent of the load through the devices. With a strong need to curtail the rising operational costs of IT infrastructure, there is a tremendous opportunity for introducing energy awareness in the design and operation of enterprise and data center networks. We focus on these...
The increase of the web traffic has created the need for web switches that are able to balance the traffic to the server farms based on their contents (e.g. layer 7 switching). In this paper we present a web switch implemented in a multiprocessor reconfigurable platform augmented with hardware co-processors. The system supports the TCP splicing scheme to accelerate the routing of the packets by forwarding...
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