http://www.diigo.com/user/Ken/I_O Fri, 09 May 2008 09:12:28 -0000 Fri, 09 May 2008 09:12:28 -0000 http://blog.quehy.com/archives/199.html <p></p><p><strong>Highlights and Sticky Notes:</strong><p><div class="content">再拜读Posix AIO规范说明，发现AIO原本意图是解决实时系统中文件操作堵塞的问题。实时系统中文件一般不大，文件操作也不频繁，AIO就比较合适。</div></p><p><p><strong>Tags:</strong> <a href='http://www.diigo.com/user/ken/Linux' rel='tag'>Linux</a> <a href='http://www.diigo.com/user/ken/AIO' rel='tag'>AIO</a> <a href='http://www.diigo.com/user/ken/I_O' rel='tag'>I_O</a> </p><p><strong>Posted by:</strong> <a href='http://www.diigo.com/user/ken'>ken</a></p> Fri, 09 May 2008 09:12:28 -0000 http://www-128.ibm.com/developerworks/aix/library/au-DirectIO.html <p></p><p><strong>Tags:</strong> <a href='http://www.diigo.com/user/ken/Unix' rel='tag'>Unix</a> <a href='http://www.diigo.com/user/ken/AIX' rel='tag'>AIX</a> <a href='http://www.diigo.com/user/ken/I_O' rel='tag'>I_O</a> </p><p><strong>Posted by:</strong> <a href='http://www.diigo.com/user/ken'>ken</a></p> Fri, 09 May 2008 09:02:22 -0000 http://www.dbanotes.net/database/direct_io_io.html <p></p><p><strong>Highlights and Sticky Notes:</strong><p><div class="content">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 <acronym title="Central Processing Unit">CPU</acronym> 的使用率。</div></p><p><div class="content">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。</div></p><p><p><strong>Tags:</strong> <a href='http://www.diigo.com/user/ken/Linux' rel='tag'>Linux</a> <a href='http://www.diigo.com/user/ken/I_O' rel='tag'>I_O</a> </p><p><strong>Posted by:</strong> <a href='http://www.diigo.com/user/ken'>ken</a></p> Fri, 09 May 2008 08:55:48 -0000 http://www.dbanotes.net/database/linux_io_benchmark_tools_compare.html <p></p><p><strong>Tags:</strong> <a href='http://www.diigo.com/user/ken/Linux' rel='tag'>Linux</a> <a href='http://www.diigo.com/user/ken/I_O' rel='tag'>I_O</a> </p><p><strong>Posted by:</strong> <a href='http://www.diigo.com/user/ken'>ken</a></p> Fri, 09 May 2008 08:52:43 -0000 60