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KMID : 0366519960160010221
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Annual Bulletin Seoul Health
1996 Volume.16 No. 1 p.221 ~ p.229
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A Study on the Improvement of I/O System for Multim
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Kwon Young-Man
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Abstract
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Next-generation workstation will have hardware support for multimedia data such as digital audio and video, Traditional I/O system relies on the data copy mechanism. This makes the speed gap between CPU and memory wider and does not support I/O-intensive applications well because they cannot transfer data efficiently, Therefore next-generation operating system needs new I/O system for mutimedia data, This work is to survey and classify the several mechanism to improve the I/O system for multimedia data. Most mechanism eliminates copies at one or more points in the I/0 system. These are shared memory I/O, page transfer, direct transfer. kernel stream, device stream mechanisms. Some things make use of the virtual memory, and the others make use of special hard ware features.
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KEYWORD
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Operating System, I/O System, Multimedia
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