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T he Internet and the applications it enables have transformed data center architectures from a simple single-server model to a multitier model in which Web servers, application servers, databases, and storage servers work together to respond to each client's request. As a result, overall application performance has become more dependent on the efficiency(More)
Adoption of the 10GbE Ethernet standard has been impeded by two important performance-oriented considerations: 1) processing requirements of common protocol stacks and 2) end-to-end latency. The overheads of typical software based protocol stacks on CPU utilization and throughput have been well evaluated in several recent studies. In this paper, we focus on(More)
Recent I/O technologies such as PCI-Express and 10Gb Ethernet enable unprecedented levels of I/O bandwidths in mainstream platforms. However, in traditional architectures, memory latency alone can limit processors from matching 10 Gb inbound network I/O traffic. We propose a platform-wide method called Direct Cache Access (DCA) to deliver inbound I/O data(More)
— With the rapid evolution of network speed from 1Gbps to 10Gbps, a wide spectrum of research has been done on TCP/IP to improve its processing efficiency on general purpose processors. However, most of them did studies only from the performance perspective and ignored its power efficiency. As power has become a major concern in data centers, where servers(More)
Scaling TCP/IP receive side processing to 10Gbps speeds on commercialserver platforms has been a major challenge. This led to the development oftwo key techniques: Large Receive Offload (LRO) and Direct Cache Access(DCA). Only recently, systems supporting these two techniques have becomeavailable. So, we want to evaluate these two techniques using 10Gigabit(More)
Using the Architecture Design and Assessment System (ADAS), the processor level architecture of an example computer system is first represented as a directed graph. Then, a method of simulating instruction execution as a sequence of data trans$ers between the nodes of the graph is presented. The simulation methodology provides flexibility in observing the(More)