Survey on System I/O Hardware Transactions and Impact on Latency, Throughput, and Other Factors
Steen Larsen*,† and Ben Lee*, *School of Electrical and Engineering Computer Science, Oregon State University, Corvallis, Oregon, USA, †Intel Corporation, Hillsboro, Oregon, USA
Abstract
Computer system input/output (I/O) has evolved with processor and memory technologies in terms of reducing latency, increasing bandwidth, and other factors. As requirements increase for I/O, such as networking, storage, and video, descriptor-based direct memory access (DMA) transactions have become more important in high-performance systems to move data between I/O adapters and system memory buffers. DMA transactions are done with hardware engines ...
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