News for hackers. Stuff that matters.

A comment on London Stock Exchange smashes world record trade speed with Linux.

Re:London Stock Exchange smashes world record trade speed wi... by lrm242 on Wednesday October 20, 2010 @08:04AM (#1810817)
World record? Not quite. Let's see full details on the numbers. NASDAQ publishes their latency numbers weekly, including average, 99th percentile, and 99.9th percentile: http://www.nasdaqtrader.com/trader.aspx?id=inet. Their average latency on order entry is 98 microseconds and their average latency on market data is 92 microseconds. Perhaps by "world record" they mean "european record".
[ Parent | on HN ]
[deleted]
Re:London Stock Exchange smashes world record trade speed wi... by lrm242 on Wednesday October 20, 2010 @11:31AM (#1811584)
Go read the website I linked to. NASDAQ publishes their methodology. I'll quote it for you here:

  OUCH Measurements of Order Latency
 
    * The time it takes to accept, process, and 
      acknowledge or fill an order.
    
    * Measured as the complete round trip for an order 
      or cancel transaction leaving a customer network 
      port, through the co-lo network and application 
      firewalls to the matching engine and back.
    
    * Measured in the production environment during a 
      full trading day including opening and close.
As you can see, they are including the time it takes to acknowledge and fill the order. It is the complete round trip time, and does include transit latency through the co-located network (which I thought was excluded).
[ Parent | on HN ]
[deleted]
Re:London Stock Exchange smashes world record trade speed wi... by Rimpinths on Wednesday October 20, 2010 @12:32PM (#1811817)
They are clustered together because it takes roughly the same amount of time to determine that an order can be matched (filled) or that it can't be matched (acknowledged, on the book.) Either way, it has to be processed by the matching engine.
[ Parent | on HN ]
Re:London Stock Exchange smashes world record trade speed wi... by danielnicollet on Wednesday October 20, 2010 @10:16AM (#1811266)
True but this is like the "World Series" for stock trading latency. Who really plays baseball other than the US and small group of other countries like Cuba ;-)
[ Parent | on HN ]