Marshall Eubanks wrote: >> Sasha, >> >> No, I don't think 10 ms is enough for a stock exchanege at least not >> this >> particular week given the turbulence on the stock market, but for a >> cash >> register yes. >> > > (I renamed the thread.) > > Given that the financial people are concerned with millisecond delays, > 10 msec > is clearly not enough for some trading applications. See, e.g., > > http://www.usfst.com/currentissue/article.asp?art=275136&issue=281 > > “a millisecond advantage in trading applications can be worth $100 > million a year to a major brokerage firm.” >
I read this article and the conclusion I came to was that this has nothing to do with clock accuracy, it has to do with available bandwidth for the critical applications and how fast the network is. The clock accuracy will not help here, so the 1 millisecond number referenced is irrelevant. What is relevant is that the networks people need to be able to do forensic analysis of packets and application connectivity for which they need timestamps to figure out what is happening when and where to ensure optimal performance. Nothing in the article talks about the accuracy needed for that. > Much of their use of multicast is driven by such considerations. > True but they are not talking about multicast for time distribution but multicast of application data. > Whether they have thought this through or not > is another question. > They may have but so far this is a network performance issue not a financial issue. Danny > Regards > Marshall _______________________________________________ TICTOC mailing list [email protected] https://www.ietf.org/mailman/listinfo/tictoc
