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Automated Deployment of an Internet Protocol Telephony Service on Unmanned Aerial Vehicles Using Network Functions Virtualization

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Interdomain I/O Optimization in Virtualized Sensor Networks.

Congfeng Jiang^1,2, Tiantian Fan^3,4, Yeliang Qiu^5,6

¹Key Laboratory of Complex Systems Modeling and Simulation, Ministry of Education, Hangzhou 310037, China. cjiang@hdu.edu.cn.

Sensors (Basel, Switzerland)

|December 15, 2018

Summary

This summary is machine-generated.

This study introduces a shared memory approach for virtual sensor networks, significantly boosting inter-virtual machine (VM) communication performance. The new method enhances data transfer efficiency and reduces latency compared to traditional TCP/IP methods.

Keywords:

circular buffer optimization interdomain communication shared memory virtual sensor networks

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Area of Science:

Computer Science
Networking
Virtualization

Background:

Virtualized sensor networks consolidate sensing services on shared hardware for efficiency.
Inter-VM data transfers are crucial for analytics and collaboration but face performance bottlenecks.
Traditional TCP/IP communication via virtual network interfaces leads to high I/O overhead.

Purpose of the Study:

To propose an optimized interdomain communication approach for virtual machines (VMs) within the same hardware.
To enhance inter-VM communication performance by minimizing kernel interactions and I/O latency.

Main Methods:

Implemented a shared memory approach managed by the hypervisor, bypassing virtual network interfaces.
Utilized a customized kernel module for shared memory creation and bidirectional event channels.
Employed state flags in a circular buffer to optimize data transfer and reduce system calls.

Main Results:

The proposed shared memory approach achieved five times higher throughput compared to traditional TCP/IP communication.
Demonstrated a 2.5 times reduction in latency for inter-VM data transfers.
Minimized system calls and kernel context switches, improving overall VM I/O performance.

Conclusions:

Shared memory offers a superior alternative to TCP/IP for inter-VM communication in virtualized sensor networks.
The optimized approach significantly improves data transfer efficiency and reduces overhead.
This method enhances the performance and scalability of virtual sensor networks.