how to test the performance of PIO and DMA

[chyyuu]

Title: how to test the performance of PIO and DMA
hi:
  We want to know how many bytes should take PIO mehtod or DMA method, so I want to know the performance of PIO and DMA in PCI 66MHZ/64bit. our  OS kernel is linux2.4.x, how can I do the test?
Help me!

chenyu





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