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Technology Stocks : The *NEW* Frank Coluccio Technology Forum
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To: aladin who wrote (34710)7/31/2010 10:01:04 AM
From: ftth  Read Replies (1) of 46821
 
Hi aladin, re: "Among other things I design network systems for brokerages. Their focus is on absolute minimums for latency and jitter. This gets extremely anal - some of the colo's in NY are taken to the level of having all the cabling the same length to equalize inter and intra rack latency."

When I read that, it indirectly implies they have squeezed every nanosecond of "protocol latency" (i.e. delays attributable to the implementation of the communications protocols used) and are down to the grand finale of tweaking latency due to physics.

So for example, how do they minimize the processing time (for lack of a better catch-all term) of encrypting, digitally signing, authenticating, and non-repudiation of each of these transactions?

With so many different implementations of those factors it seems it might be more fruitful (i.e. better latency-reduction payback) to tweak and squeeze all those factors than latency due to physics (e.g. cable lengths).

Plus, once you get to physics and propagation velocities, optical fiber is the "slowest" (compared to copper-based cables and to wireless). If memory serves, there's about a 30% difference between those 3 mediums...something like 68% to 98% of c.
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