Ninja Zen no more unfiltered data?

We've worked through all sorts of issues with OEC. Good news is their support team has been responsive. Bad news is having to work around issues in the first place. Charting issues, Level II Data out of sync, receiving different time stamps from API versus their platform, orphaned orders. To be fair these issues have been relatively minor and resolved quickly. Overall their Onelink API is decent and worth a look. Same with TT over the years... Singapore support here we go again...

Quote from AMT4SWA:

PC,

have you encountered any volume or data problems since November 2009 with OEC data like those mentioned in this thread........

http://www.traderslaboratory.com/forums/f218/oec-histogram-faulty-volume-7105.html

TIA!
 
Quote from PocketChange:

We've worked through all sorts of issues with OEC. Good news is their support team has been responsive. Bad news is having to work around issues in the first place. Charting issues, Level II Data out of sync, receiving different time stamps from API versus their platform, orphaned orders. To be fair these issues have been relatively minor and resolved quickly. Overall their Onelink API is decent and worth a look. Same with TT over the years... Singapore support here we go again...
Thanks for that feedback......good to know information!
 
Quote from dcraig:

I have Level 1 abstraction layer that is fine for the three feeds I have supported so far - IB TWS, OpenTick (now defunct) and DTN IQFeed. Each tick results in a tick event (eg last, bid, last size etc etc). Tick listeners register themselves to receive tick events in the Java style of event listeners. Most stuff is decoupled from the tick data receive thread via tick event queues and quite extensive threading.

It is easily fast enough. Monitoring 500 stocks and some futures, and even with flashing "christmas tree" quote sheets, alarms, charting, 4 screens, modest video cards etc etc, a Q9550 is still loafing along. Even in a fast market it's still 70%+ idle. I'm certain that most of the CPU utilization is in the AWT event processing thread doing GUI things.

Java is the biz for this stuff. If I was using C++ it would have taken far longer.

dcraig, I agree with you 100%. My reasoning is that the abstraction layer would involve copying all data an extra time. My system is not monitoring as many instruments as yours so I was not sure how it would handle monitoring hundreds of instruments at the same time. Also, my ticks arrive out of order so I need to sort them. Currently, I just ignore this issue and sort everything at the end of day. I am not doing anything realtime yet so this works. But eventually, I will need to implement something to handle the sorting in realtime. How are you storing your data? Right now I am storing everything in text files. I was using binary, but I found that after compression, there was not much difference in file size.

Last year, I did a speed comparison of Java vs. C++ on an E6700 running most of the TA-LIB indicators. I found C++ to be about 1.4x faster, but in the end, I opted for productivity. I am just much more productive with Java and most importantly, the Eclipse IDE. Also, threading is a lot easier to implement in Java than C++ which is where I think I will get most of my performance gains.
 
Quote from PocketChange:

Bid and Ask Offers are constantly changing and the exchange only time stamps the last trade which could be seconds past the instant real time or even minutes for thinner traded instruments ie M6E.

The clock skew is just one part of the equation. Add in network latency and CPU time to process and filter the price feed. Time required to process orders and confirm fills + error checking etc.

My point was accurately processing feeds, placing and managing orders sub 50ms is a challenge.

I have time stamps on the bid / ask changes. Are you saying that these time stamps were supplied by my provider, Zen-Fire and not the exchange? Where did you find that information about how data messages are reported? I am looking for it.
 
"Equity futures now send milliseconds in iLink timestamps, as options and FX futures do today. FIX/FAST timestamps will always default to “000” milliseconds and should not be relied upon by customers"

Basically CME says they are able to process order messages in 1/100 of a second. But they purposely omit milliseconds from their time stamps...

Message Response time from 2008 to 2009
ES From 16.95ms to 9.45ms
6E From 11.73 to 3.90 ms

Page 49: http://www.cmegroup.com/globex/file...4_ChicagoNY.PDF

Quote from SNYP40A1:

I have time stamps on the bid / ask changes. Are you saying that these time stamps were supplied by my provider, Zen-Fire and not the exchange? Where did you find that information about how data messages are reported? I am looking for it.
 
Humm...I wonder why they would omit ms from bid/ask information. The time stamps that come from Zenfire have microsecond resolution on the bid/ask. Perhaps the time stamps are when they receive the information. Not sure.
 
Thank you

so the order entry response time is difference between posting an order and getting ACK back ?

Is that right?

Look at those soybeans! :) Is it culture of vegetarins drives it up ?
 
Just the CME/Broker side... you still have your side including data transport to measure in order to determine your round trip execution time.

Remember these are averages... you'll see response slip to 20+ ms during high volume fast moving runs.

If you stage your orders on your PC and trigger release to your broker you'll have network latency and processing lag which can easily exceed 100ms. You can always have resting orders placed in the exchange limit order queue.

This is where your broker's platform can make a difference.
If you can stage your orders on your broker's servers and released to the exchange on a trigger your response times are optimized.
One example is CME globex does not support trailing stops. These orders are simulated and managed on your broker's servers.



Quote from maxima120:

Thank you

so the order entry response time is difference between posting an order and getting ACK back ?

Is that right?

Look at those soybeans! :) Is it culture of vegetarins drives it up ?
 
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