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2. 发明授权

US07216194B2 Methods and systems for improving delayed read handling 有权
标题翻译：改进延迟读取处理的方法和系统
公开(公告)号：US07216194B2
公开(公告)日：2007-05-08
申请号：US10409569
申请日：2003-04-08
申请人： Richard L. Solomon , Jill A. Thomas
发明人： Richard L. Solomon , Jill A. Thomas
IPC分类号： G06F13/36
CPC分类号： G06F13/4027 , G06F2213/0024
摘要： Methods and systems for improving delayed read handling in a loop of delayed commands among a larger set of commands in a queue of commands are disclosed. In general, when commands in a delayed loop are completed out of order, “holes” are left in the command queue. Skipping over such “holes” consumes multiple clock cycles before another command can be issued, as each “hole” must be examined first in order to determine that it no longer contains a valid read command. A loop of delayed read commands can thus be created from among a larger set of commands in a queue of commands with each command entry having a pointer to the next valid command. Valid delayed read commands in the loop of commands can then be processed by automatically advancing between any two valid delayed read commands among the loop of commands. In this manner, the time to advance between any two commands in the delayed read loop is constant and PCI read performance thereof can be dramatically improved.
摘要翻译：公开了一种用于在命令队列中的较大命令集中的延迟命令循环中延迟读取处理的方法和系统。一般来说，当延迟循环中的命令按顺序完成时，命令队列中留下“孔”。跳过这样的“空穴”可以在发出另一个命令之前消耗多个时钟周期，因为必须首先检查每个“孔”，以确定它不再包含有效的读取命令。因此，可以从命令队列中的更大的一组命令中创建延迟读取命令的循环，其中每个命令条目具有指向下一个有效命令的指针。命令循环中有效的延迟读取命令可以通过在命令循环中的任意两个有效的延迟读取命令之间自动进行处理。以这种方式，在延迟读取循环中的任何两个命令之间进行的时间是恒定的，并且可以显着提高其PCI读取性能。

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