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#NETMAP USERSPACE UDP STACK SOFTWARE#
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The open group base specifications issue 7. Memcached-a distributed memory object caching system. Besides, it ameliorates the performance of realistic application (memcached) by 36 to 67% compared to those on the Linux stack.Įpoll- i/o event notification facility. Based on a 40-core machine, the evaluation shows that FastUDP represents a significant improvement in the packet transfer throughput by up to 13× and reduces the packet transfer latency by up to 4.14× compared to the latest Linux (4.4.0) UDP stack. Moreover, to support high throughput, FastUDP also proposes a novel work-queue-based approach to allow concurrent packet to transfer over multiple NIC ports. FastUDP addresses the inefficiencies from the following three novel designs: (1) enabling the exclusive thread model for improving scalability (2) adopting a poll mode and batched operation for increasing computing resource utilization (3) constructing a shared hugepage memory pool to eliminate the context switch overhead. In this paper, we present FastUDP, a highly efficient and scalable user-level UDP-based network stack optimization in multi-core systems. Although many works have been proposed to address the shortcomings, inefficiency of sending massive small packets via UDP protocol in traditional Linux kernel implementation is persisting, which includes high overhead from socket operations, suboptimal scalability in multi-core systems, nonsupport of multiple network interface card (NIC) ports. Constructing a high-performance stream methodology of massive small message packets is fundamentally challenging. With the increasing data volume, the performance of cluster in data center is suffering increasingly severe congestion problem of massive message packets. Nowadays, many applications, e.g., network routers, distributed data process engines, firewall, need to transfer packets at linear rate.
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