Xen虚拟机的优化网络适配器研究与实现

With the continuous performance improvement of computer hardware,the efficiency of computer utility reduces correspondingly to a large extent nowadays. This phenomenon is much more conspicuous in the server application.for example, the usual server loaded with one kind of service just can get utility efficiency reach to about 15%.So virtual technology will be increasingly attached with much more importance under such circumstance and turn into one hot point in IT industry. The author does some research in the development of network driver and then design and implement the virtual network driver complied with NDIS(Network Device Interface Specification). After success configuration of virtual machine based on Xen to run Windows, it can connect to real network outside successfully by the use of the virtual network driver mentioned above and increases nearly 30% network transmission performance than the network adapter QEMU emulating. It can be sure that expedite network platform with reasonable configuration of virtual operating system can make a significant difference in the domain of public server computation in the upcoming future.