| 适配器驱动层并行I/O调度性能分析 |
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| 引用本文： | 吴涛,张江陵,冯丹.适配器驱动层并行I/O调度性能分析[J].华中科技大学学报(自然科学版),2003,31(12):10-12,15. |
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| 作者姓名： | 吴涛 张江陵 冯丹 |
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| 作者单位： | 华中科技大学计算机科学与技术学院 |
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| 基金项目： | 国家自然科学基金资助项目 ( 60 2 73 0 74) |
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| 摘 要： | 对适配器驱动技术进行了研究，提出了一种可扩展的并行I／O方法．这种方法将多DMA通道和I／O接口集成到适配器中，可实现I／O命令的多通道并行处理，从而以较低代价实现外围设备I／O性能扩展．建立并行I／O的SPN模型，对这种结构下各I／O环节对设备栈I／O性能的影响进行了分析，重点研究I／O请求量与系统IRP流量和I／O通道利用率的关系，并结合测试数据对分析结论给予了证明．
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| 关 键 词： | 并行I／O SPN模型 适配器驱动层 设备驱动程序栈 IRP流量 DMA通道 调度性能 |
| 文章编号： | 1671-4512(2003)12-0010-03 |
The analysis of policy of parallel I/O and its performance realized in HBA driver |
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| Wu Tao,Zhang Jiangling,Feng Dan.The analysis of policy of parallel I/O and its performance realized in HBA driver[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2003,31(12):10-12,15. |
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| Authors: | Wu Tao Zhang Jiangling Feng Dan |
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| Institution: | Wu Tao Zhang Jiangling Feng Dan |
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| Abstract: | Based on the study of host bus adapter driver, a scalable parallel I/O method was proposed. Several hardware components such as DMA channels and I/O interfaces were integrated in one PCI HBA. The HBA driver can set and utilize all the components to do the I/O work concurrently, and the scalable performance was available at little cost. Stochastic Petri net model was constructed to analyze the relationship between driver stack performance and I/O conditions. The effect of I/O request packet throughput and utilization rate of DMA channel made by change of block size of I/O request packet was emphasized. It was proved that the proposal was effective. |
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| Keywords: | parallel I/O SPN model device driver stack I/O request packet throughput DMA channel |
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