Patrick Klos wrote: > In article <[email protected]>, > ScottyG <[email protected]> wrote: > >> Hello. >> >> The company I am working for needs to be able to record timestamps in a >> trading >> system logs down to a .1 microsecond accuracy. >> >> We will have servers located in London, New York and Chicago. There will be >> a >> dedicated resilient link between London and New York. >> > > What OS(es) are these servers running? There are very few (if any) ways for > an "application" to query a piece of hardware (driver) in near the .1 usecond > timeframe. And depending on the OS (Windows), you can't be guaranteed to do > anything in that timeframe. > > >> Searches on the web have made claims that NTP can achieve this accuracy. >> Unfortunately the sales rep for the NTP server we looked at told me that the >> best I >> could expect is 2-5 ms synchronization across servers. >> >> Has anyone had any experience doing this? Can anyone suggest how to achieve >> this accuracy? >> > > How do you record receipt of your "trades"? Is this for OATS 6953 compliance or what? is this ATD or TRACE based trading? - they are all different. > They probably arrive in your > server(s) via a network connection or dedicated communications link? Just > the processing of the communcations could take longer than .1 useconds. > > >> We do have some budget but this but if I need to spend a whole lot on this I >> need >> to get in front of my management with the reasons. >> > > As others have pointed out, you first need to come up with a practical set > of requirements. Ask your people where they came up with this .1us number > and what they think that will solve? > > ========= For LAN/WAN Protocol Analysis, check out PacketView Pro! ========= > Patrick Klos Email: [email protected] > Klos Technologies, Inc. Web: http://www.klos.com/ > ============================================================================ > > _______________________________________________ > questions mailing list > [email protected] > https://lists.ntp.org/mailman/listinfo/questions > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.339 / Virus Database: 270.12.73/2180 - Release Date: 06/16/09 > 07:41:00 > >
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