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Reed wrote: > >> To say it again: More memory *doesn't* improve throughput when the >> queue depths exceed one packet on average > > slight disagreement here. the buffer improves throughput up to the > point where it handles one burst of packets. When packets are > transmitted individually, that's about one packet (insert hand waving > about scheduling delays, etc). but with wifi where you can transmit > multiple packets in one airtime slot, you need enough buffer to handle > the entire burst. A different hand-wave: what about "packet trains"? They make using queuing networks mis-estimate, do they come close together enough that routers need to be sensitive to them, and affect the number of packets they need to buffer? --dave -- David Collier-Brown, | Always do right. 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