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With the rapid development of Internet technologies such as cloud computing and big data, the scales of distributed information systems in big companies have grown to enormous sizes. Automatic detection and diagnosis of system faults in the large-scale information systems is complicated and important in both practice and research. In this paper, we propose a Graph-based Fault Diagnosis approach in...
Continuous evolution of virtualization-related technologies have benefit greatly flexibility and reliability of software system. However, although virtualization removes binding between application and server underneath, it complicates the regular runtime hierarchy into an intricate structure, where cross-layer monitoring and holistic evaluation becomes challenging. Currently lots of monitoring practices...
Monitoring traffics between applictions deployed in a distributed computing system (DCS) can help analyzers perceive the dynamic load of each application, and detect the anomalies in all the running processes. However, due to the factors of high dimension and strong periodicity, the traffic data is difficult to visualize and interpret. In this paper, we propose a traffic monitoring approach based...
Recently video-on-demand (VoD) has become a popular Internet application due to its promising usage in a variety of Internet-based services. However, it remains a challenging problem to provide scalable and fluent VoD services over Internet especially when including VCR operations into VoD service. Supporting user interactivities such as random seek, rewind and fast forward is desirable while these...
As manycore architectures enable a large number of cores on the die, a key challenge that emerges is the availability of memory bandwidth with conventional DRAM solutions. To address this challenge, integration of large DRAM caches that provide as much as 5?? higher bandwidth and as low as 1/3rd of the latency (as compared to conventional DRAM) is very promising. However, organizing and implementing...
Digital rights management (DRM) is an efficient method to protect digital content in various applications such as digital TV, IPTV, video on demand, etc. In China, the legal and administration systems, business models and industrial chain are different from those of other countries and therefore have special requirements on DRM technologies. In this paper, we propose a new licensing design to extend...
DRM has been widely used for digital content protection over Internet. Regular DRM systems bundle "user, rights, and content" together during license delivery. Thus, it will be easy to cause the overload of license server when licenses need to be updated frequently. In this work, we present a scheme based on "rights claim", separating the bundled one into "user - rights",...
Ship dynamic and video monitoring system at sea aims at improving safety of ship sailing and providing help for salvage. In this system, wireless communication technology of CDMA1X is used to transfer GPS dynamic positioning information and ship video. As to the special communications at sea, the actual bandwidth of single channel CDMA1X is too low to transfer video. In order to cope with this problem,...
Emergency calls are a very important task on the Internet. It is a requirement to accept as many VoIP calls as possible, and provide high quality service for emergency calls in limited bandwidth. This paper puts forward a scheme based on end-to-end QoS service model for emergency calls. It provides high quality service for emergency calls by using Diffserv AF service model and a call admission method...
Building a large-scale CMP platform requires a deep investigation of core performance impact, cache hierarchy implications, and on- and off-die bandwidth requirements. simulation speed and flexibility constitute fundamental challenges in such an evaluation. ManySim, a trace-based simulation infrastructure, provides first-order architectural insights into LCMP platforms' performance potential and scalability...
Data movement (memory copies) is a very common operation during network processing and application execution on servers. The performance of this operation is rather poor on today's microprocessors due to the following aspects: 1) Several long-latency memory accesses are involved because the source and/or the destination are typically in memory, 2) latency hiding techniques, such as out-of-order execution,...
TCP Splicing can be used in content-aware switches to tremendously reduce overall request latency. In order to reduce the processing latency further, we propose to off load the protocol processing onto network processors (NPs). An NP consists of a multithreaded multiprocessor architecture that can provide high throughput for packet processing or forwarding. However, off loading any protocol software...
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