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Politics : Formerly About Advanced Micro Devices

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To: Tenchusatsu who wrote (91009)	2/2/2000 9:06:00 AM
From: Dan3	Read Replies (1) of 1575235

Re: for servers, sustainable bandwidth matters more than latency... I think we agreed to disagree on that one :-) But I'd ask you to consider, for a moment, that simple file serving is moving to dedicated SAN components like NetApps, and that "servers" are more often now supporting applications with concurrent processes for each connection. Lots of task and context switches, so that even multi-megabyte caches can be overwhelmed. Doesn't the use of one or more MRH units in series start taking a noticeable hit on performance? Aren't your total latencies approaching 300ns through the hub? There is always some housekeeping that must be done as the new thread is invoked, monitoring the thread's port(s) alone will require a few unique accesses. How many non-contiguous locations are accessed in a typical context switch? This may not be relevant to the current discussion (AMD) and if you want to reply with a simple "let's give it a rest" I'd be happy to. (I've long given up on trying to figure out why Rambus stock has stayed so high). Dan

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