인터넷의 보급과 웹 기반 서비스의 등장은 서버의 역할을 연산 및 자료 처리에서 TCP/IP 기반의 네트워크 서비스 제공으로 변화시켰다. 인터넷의 폭발적인 성장과 네트워크 전송 기술의 발전에 따라 서버의 네트워크 입출력 부하는 크게 증가하여 성능 한계점에 이르렀으며, 이로 인하여 다양한 방식의 네트워크 입출력 성능 개선 기술들이 개발되어 왔다. 10Gbps급 이더넷이 현실화되고 있는 지금 서버 시스템은 날로 증가하는 네트워크 입출력 부하를 처리하기 위하여 연산 능력 향상을 목적으로 추진하던 기술개발 방향을 입출력 처리 성능 향상 기술로 전환하고 있으며, 인텔의 II/OAT, 마이크로소프트의 Chimney 등이 이러한 방향을 주도하고 있다. 본 고에서는 서버의 네트워크 입출력 처리 성능 향상을 위하여 활용되는 기술들을 설명하고 아울러서 네트워크 입출력 처리 성능 개선을 목적으로 개발되는 TCP Onloading 시스템 기술에 대하여 기술한다.
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