Limite de Capacidade e Proteção de Servidores em Redes Gigabit

Cristina Duarte MurtaMarco Antonio Jonack

This paper presents the evaluation of two mechanisms for livelock control experienced in computers of different capacities in a gigabit network.The firrst mechanism is called interrupt moderation. It is implemented in most to day high-performance network interfaces. The second mechanism, called NAPI, is a new API for Linux network drivers which uses a polling scheme to handle incoming packets. The results show that NAPI is more efficient than interrupt moderation in many aspects, including the system stability in situation of huge traffic and CPU utilization.

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