Join the 80,000 other DTN customers who enjoy the fastest, most reliable data available. There is no better value than DTN!

(Move your cursor to this area to pause scrolling)




"My broker in Davenport suggested I give you a try as he uses your service and says its the best." - Comment from Bill via RT Chat
"Awesome response, as usual. It is a sincere and refreshing pleasure to do business with DTN, compared to your competition." - Comment from Ryan
"If you are serious about your trading I would not rely on IB data for serious daytrading. Took me a while to justify the cost of IQ Feed and in the end, it's just a 2 point stop on ES. Better safe than sorry" - Comment from Public Forum
"Previously I was using *******. IQFeed is WAY more economical, and for my charting needs is just as good, if not better." - Comment from Public Forum Post
"I ran your IQFeed DDE vs. my broker vs. a level II window for some slow-moving options. I would see the level II quote change, then your feed update instantaneously. My broker's DDE, however, would take as much as 30 seconds to update. I am not chasing milliseconds, but half a minute is unacceptable." - Comment from Rob
"Thanks for all of your help. Great customer service deserves to be recognized which one the reasons I've been a customer of DTN for over 10 years!" - Comment from Stuart
"Can I get another account from you? I am tired of ******* going down so often" - Comment from George
"I noticed that ******* quotes locked up shortly after the interest rate announcement yesterday while yours stayed stable." - Comment from Ron in Utah
"I have to tell you though that using the IQFeed API is about the easiest and cleanest I have seen for some time." - Comment from Jim
"I've been using Neoticker RT with IQFeed for two months, and I'm very happy with both of the products (I've had IQFeed for two years with very few complaints). The service from both companies is exceptional." - Comment from Public Forum
Home  Search  Register  Login  Blogs Recent Posts

Information on DTN's Industries:
DTN Oil & Gas | DTN Trading | DTN Agriculture | DTN Weather
Follow DTN_IQFeed on Twitter
DTN.IQ/IQFeed on Twitter
DTN News and Analysis on Twitter
Viewing User Profile for: gcarleu
About Contact
Joined: Apr 4, 2018 12:23 PM
Last Post: Apr 4, 2018 01:18 PM
Last Visit: Apr 4, 2018 01:47 PM
Website:  
Location:
Occupation:
Interests:
Avatar:
AIM:
ICQ:
MSN IM:
Yahoo IM:
Post Statistics
gcarleu has contributed to 3 posts out of 18820 total posts (0.02%) in 229 days (0.01 posts per day).

20 Most recent posts:
IQFeed Developer Support » IQFeed Maximum Messages per Second Apr 4, 2018 01:18 PM (Total replies: 2)

Last try sending the file up.

- Greg

IQFeed Developer Support » IQFeed Maximum Messages per Second Apr 4, 2018 01:16 PM (Total replies: 2)

The file didn't make it up with the original post.

- Greg

IQFeed Developer Support » IQFeed Maximum Messages per Second Apr 4, 2018 01:13 PM (Total replies: 2)

I am getting substantial lags in the IQFeed data. The lags are measured using the timestamp out of IQFeed and comparing it to the system time when the message enters my software.

Of course, there is an offset between the IQFeed clock and my local system clock. My hope is that the time difference would remain fairly constant and during low traffic times of day, it does. However, during high traffic periods, such as the last 30 minutes of trading, the offset varies a lot, sometimes it just keeps increasing.

Does anyone have any information on how many tickers and how many messages per second IQFeed can support?

I have attached a Python 3.6 program that I am using to do the measurement. First, you will need to start IQLinkLauncher and then run the program as "python IQTestClient.py"

Thanks in advance

- Greg


Time: Sun November 18, 2018 5:03 AM CFBB v1.2.0 16 ms.
© AderSoftware 2002-2003