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)




"I had always used ******* but for the past 2 weeks have been trying DTN IQFeed. Customer support has been extraordinary. They call just to make sure your problem hasn't recurred." - Comment from Public Forum
"This is an excellent value, the system is generous (allowing for 500 stocks) and stable (and really is tick-by-tick), and the support is fantastic." - Comment from Shirin via Email
"Just a quick one to say I'm very impressed so far :) The documentation for developers is excellent and I've quickly managed to get an app written to do historical downloads. The system is very robust and pretty quick considering the extent of data that's available. The support guys have been very helpful too, in combination with the forums it's been plain sailing so far!" - Comment from Adam
"I just wanted to let u know that your data feed/service is by far the best!!! Your unfiltered tick data is excellent for reading order flow and none of your competitors delivers this quality of data!" - Comment from Peter via Email
"Awesome response, as usual. It is a sincere and refreshing pleasure to do business with DTN, compared to your competition." - Comment from Ryan
"Version 4.0.0.2 has been working well for me and I appreciate that it is now a much tighter client to work with. I feel I can go to press with my own application and rely on a stable platform" - Comment from David in IA.
"There is no doubt that IQFeed is the best data provider. I am very satisfied with your services. And IQFeed is the only one that I would recommend to my friends. Now, most of them are using your product in China." - Comment from Zhezhe
"Everything is working great with the API. I love it." - Comment from Calvin
"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
"I used to have *******, but they are way more money for the same thing. I have had no probs with data from DTN since switching over." - Comment from Public Forum Post
Home  Search  Register  Login  Recent Posts
Information on DTN's Industries:
DTN Oil & Gas | DTN Trading | DTN Agriculture | DTN Weather
Follow DTNMarkets 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 21191 total posts (0.01%) in 2,221 days (0.00 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: Thu May 2, 2024 10:48 AM CFBB v1.2.0 7 ms.
© AderSoftware 2002-2003