| 摘要 |
Methods and apparatus for configurably limiting performance of an I/O controller device in processing of I/O requests. A performance monitor and control module in the I/O controller device monitors performance of the I/O request processing module and limits its processing to assure that maximum performance threshold values are not exceeded. In one embodiment, the performance monitoring may average performance over one or more periods of time and may provide a moving average window to determine the performance of the I/O controller device. The measured performance may determine a variety of performance measures each of which may be compared against one or more corresponding maximum performance threshold values. Requests that cannot be processed during a present period of time are delayed until a subsequent period of time to thereby limit performance of the I/O controller device.
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