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Direct I/O 与正常高速缓存的 I/O - DBA notes
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Saved by 1 people (0 private), first by anonymouse user on 2008-05-09
Ken
on 2008-05-09
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Linux
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I_O
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直接 I/O 的主要优点是,通过去除从高速缓存到用户缓冲区的复制环节,降低了文件读取和写入时
CPU
的使用率。
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直接 I/O 也可以有助于那些必须使用同步写操作的应用程序,因为这些写操作必须转至磁盘。
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Ken Wei
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