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2022-05-25 - 17:45

Dates and Events:

OSADL Articles:

2022-01-13 12:00

Phase #3 of OSADL project on OPC UA PubSub over TSN successfully completed

Another important milestone on the way to interoperable Open Source real-time Ethernet has been reached


2021-02-09 12:00

Open Source OPC UA PubSub over TSN project phase #3 launched

Letter of Intent with call for participation is now available


2016-11-12 12:00

Raspberry Pi and real-time Linux

Let's have a look at the OSADL QA Farm data


2016-09-17 12:00

Preemption latency of real-time Linux systems

How to measure it – and how to fix it, if it's too high?



Real Time Linux Workshops

1999 - 2000 - 2001 - 2002 - 2003 - 2004 - 2005 - 2006 - 2007 - 2008 - 2009 - 2010

Eighth Real-Time Linux Workshop on October 12 to 15, 2006, in Lanzhou, Gansu, P.R.China

Real Time Management for P2P Resources on Mobile Devices

Xiaoyun Chen, Lei Wang, Jingchun Zhang, Yu Zhou, Yong Tang, and Minghui Mo
School of Information Science and Engineering
Lanzhou University, Lanzhou, P.R China
lwangªlzu.edu.cn

According to 3G standard, the communicating bandwidth of mobile devices is 2Mbps, which makes it possible to share P2P resources among mobile devices. BitTorrent use pure P2P structure to share resources among PC. Howerer, mobile devices have very low computing and memory capabilities. In this paper, a new method designed as Real Time Estate management Server (RTES) is found to realize sharing resources among mobile devices. Based on the operating system of RedHat Linux AS3 Update4, the RTES collects real time on-line estates of the mobile devices by an on-line estate management module. It employs an improved algorithm named Mobile Devices Resources Selecting (MDRS) to realize pieces and addresses selecting of mobile devices' downloading. The RTES manages the process of mobile devices' resources downloading. The simulating results indicate that by adjusting the weight of valuables of MDRS algorithm, in general situation, the average response time to the mobile peers' request is within 90ms, the situation of the mobile peers less than 3000. This proves the system is real time and effective.

 

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