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by hinkley
288 days ago
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I’m pretty sure that as of PCI-E 2 this is not true. It’s only true if you need to process the data before passing it on. You can do direct DMA transfers between devices. In which case one needs to remember that memory isn’t on the CPU. It has to beg for data just about as much as any peripheral. It uses registers and L1, which are behind two other layers of cache and an MMU. |
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