The Design And Implementation Of Parallel Transmission With Multithread

The usage of stand-alone is rare in the current network for TV production and TV image-text production. Most applications are all concentration to the internet application model. The safety, stability, convenience and efficiency of the internet have a great influence on the programs production and TV operation. The analysis and research to the existing problems of the network platform software is a very effective measure to improve the internet experience.Current, the network of program production all adopt the model base on centralized storage. Namely, the client equipment direct access a high-speed for centralized storage through FC or Ethernet to achieve the streamline production with multiple workstations only by file sharing.This model of centralized storage solves the problem of high-speed access to the large video & audio files and the links to the same contents and documents under the different workstations. On the other hand, many problems also can't be solved. Such as the file missing of the centralized storage which is caused by the error operation or viral infections will affect the safety of the whole network and normal operation.In order to solve various problems may be occurred, the enterprise mostly adopt the strict management way. It will increase the difficulty of the management and the pressure to the managers.Even so, many projects will loss the concentrated file system occasionally because of the lack of the software. It will bring the disadvantage to the normal user.This article puts forward the way of check in & check out in the edit network through the analysis to the characteristics of existing operations. The file which is used by the user is no longer the share file under the centralized storage, but a copy sheet. Whatever the user does any revision even damaged in the local, the file under the centralized storage will not change at all. The file will be replaced by hand only after the user confirmed. This method achieves both the safety to the documents visiting and none interferences between different users when visiting the same file in the same time.In order to improve the efficiency of the usage to the centralized storage and reduce the excessive occupied to the system when check in & check out as well as the consideration to the safety of transmission, this article puts emphasis on the research to the multithread parallel transmission and the sequential design. Put the serial transmission as well as the operation to the different types of resources occupation into parallelize, according to the different occupancy characteristics of CPU, disk IO, network transmission in different progress. Not only enormously increased transmission efficiency, but also achieved the problem of MD5 during transmission, smooth over the shortage of exiting FTP transmission technology. It makes the system plays a important role in usage to the actual project. Meanwhile, it also reduces the cost of the system and increases the cost performance.