Abstract
For the purpose of improving the performance of web server, this paper implements a high-performance web server prototype system, which is named LCCWS. Adopting PF_RING technology, which is similar to zero-copy technology, this system achieved to copy data between network interface device and kernel ring buffer in DMA mode and access data between application program and kernel ring buffer in MMAP way, so that the CPU participation and memory copies are reduced, saving much CPU overhead. When data packets splitting and encapsulating, using the lightweight TCP/IP protocol suite, the improved web server passed up the packets directly from the data-link layer to application layer, so that the time of copies is reduced and the packet processing is accelerated. LCCWS reduces the CPU overhead effectively, decreases the transferred data copying between memories, and improves transferred efficiency, laying foundation for further research to improve strong practical, feature-rich and high-performance web server.
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