Structural properties and static robustness of Linux software network by Ershen WANG, Yu LI, Chen HONG, Qinghua SUN, Chang LIU

“…The source code of the Linux software was analyzed,and the directed function call network model,the weak coupling network model of software system,the strong coupling network model and the strong connected subgraph model were built.The characteristics and static robustness of the four networks were studied.The results show that four networks all show ‘small-world’ property.The out-degree distribution of the six modules in the Linux network generally follows the exponential distribution,and the in-degree distribution of the six modules follows the power law.The best attacking strategy was distinct when different robustness evaluation indicator was adopted.For the weak connectivity indicator,high in-degree attacking strategy was of the greatest damage to the weakly coupled software network.…”
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Research on traffic identification and scheduling based on optical interconnection architecture in data center by Bingli GUO, Ning ZHAO, Zhiwen ZHU, Fan NING, Shanguo HUANG

“…In order to solve the data center link congestion problem,based on the characteristics of the flow distribution and flow types,a flow identification and scheduling scheme based on optical interconnect structure,named HCFD (host-controller flow detection),was proposed to identify the elephant flow which has a large impact on the network performance,and use the SDN controller to make forward strategy,and schedule the network traffic reasonably.The implementation of the scheme was to use the Netfilter framework in Linux kernel protocol on the host side to mark the flow that exceeds the threshold amount.Then,the classification model was used in the controller side to classify the marked flow.Finally,the appropriate forwarding strategy was developed based on the above results.With the advantage of the photoelectric network,mechanisms of flow depth fusion and switching could be realized.The scheme which integrates the advantage of the existing research results,was expected to identify elephant flow more accurately and comprehensively.It can effectively alleviate the network congestion,make full use of network bandwidth,reduce end-to-end delay and packet loss rate.…”
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Application research on distributed Zabbix network monitoring system by Xiao-hui GUO, Run-zhi LI, Qian ZHANG, Zong-ming WANG

“…With the increasing number of server,to ensure the normal operation of the server and application services becomes more and more complex.The importance of server monitoring system in modern server management was explained.With Zabbix,a distributed monitoring and control system was deployed,realizing some important application services monitoring in Windows and Linux environment with distributed network monitor and control system.The principle and configuration of the monitoring of Web Server,Database and DNS Server were introduced.Finally,the use cases using in the network center were shown.…”
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Comparative analysis of package managers Flatpak and Snap used for open-source software distribution by Grzegorz Jan Cichocki, Sławomir Wojciech Przyłucki

“… This article presents the result of a research of the Flatpak and Snap package managers used to distribute open-source software on Linux systems. Both package managers are characterised by their versatility and implementation of sandboxing. …”
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Research of cloud disk system construction in campus network by Jun LI, Feng-dan LAO, Ren-ming ZOU

“…According to the significance and demand of cloud disk system in campus network,a solution of combining the miniyun open source project,LVS(Linux virtual server) load balancing,Moosefs distribute file system and MySQL master-slaver replication read/write splitting was proposed to construct high availability cloud disk system.A cloud disk system was built and put into practice based on this solution in China agricultural vnirersity.The application results shows that it meets the demand for cloud disk in campus network with characteristics of low cost,dynamic scalable and high availability.…”
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A Hybrid Measurement Approach to Medium Occupied Time for Radio Resource Management in IEEE 802.11 Networks by Seung-Chur Yang, Jong-Deok Kim

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Parallel Monte Carlo computations in SCore environment by Svajonė Vošterienė

“… Parallel Monte Carlo (PMC) methods are successful because particles are typically independent and easily distributed to multiple processors. We use the PC Cluster TAURAS [1] with the SCore cluster system software on top of Linux OS to present the strategy for parallelizing Monte Carlo calculations. …”
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NFP:enabling network function parallelism in NFV by Jun BI, Chen SUN, Heng YU

“…Software-based sequential service chains in network function virtualization (NFV) could introduce significant performance overhead.Current acceleration efforts for NFV mainly target on optimizing each component of the sequential service chain.However,based on the statistics from real world enterprise networks,it was observed that 53.8% network function (NF) pairs could work in parallel.In particular,41.5% NF pairs could be parallelized without causing extra resource overhead.NFP was presented,a high performance framework,that innovatively enabled network function parallelism to improve NFV performance.NFP consisted of three logical components.Firstly,NFP provided a policy specification scheme for operators to intuitively describe sequential or parallel NF chaining intents.Secondly,NFP orchestrator intelligently identified NF dependency and automatically compiled the policies into high performance service graphs.Thirdly,NFP infrastructure performed light-weight packet copying,distributed parallel packet delivery,and load-balanced merging of packet copies to support NF parallelism.An NFP prototype based on DPDK in Linux containers was implemented.The evaluation results show that NFP achieves significant latency reduction for real world service chains.…”
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