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 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
"Boy, probably spent a thousand hours trying to get ******* API to work right. And now two hours to have something running with IQFeed. Hmmm, guess I was pretty stupid to fight rather than switch all this time. And have gotten more customer service from you guys already than total from them… in five years." - Comment from Jim
"I just wanted to say how happy I am with your service. I was able to download the API docs last week and I was able to replicate Interactive Brokers historical bar queries and realtime bar queries over the weekend. That was about one of the fastest integrations that I've ever done and it works perfectly!!!!" - Comment from Jason via Email
"I started a trial a few weeks back before the market went wild. DTN.IQ didn’t miss anything and beat my other provider. I decided to stay with you because of the great service through all the volatility." - Comment from Mike
"I was with ******* for 4 years at $230 a month, this is a huge savings for me, GOD BLESS YOU PEOPLE," - Comment from T.S. via Email
"Everything is working amazing now. I'm already impressed with the true-tick feed of IQFeed and it's ability to support my 480 symbol layout." - Comment from Tyler via Email
"I'm very glad I switched to IQFeed. It's working perfectly with no lag, even during fast market conditions." - Comment from Andy via Email
"DTN has never given me problems. It is incredibly stable. In fact I've occasionally lost the data feed from Interactive Brokers, but still been able to trade because I'm getting good data from DTN." - Comment from Leighton
"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
"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
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
»Forums Index »Archive (2017 and earlier) »IQFeed Developer Support »Summary performance
Author Topic: Summary performance (4 messages, Page 1 of 1)

-Interested User-
Posts: 28
Joined: Oct 24, 2008

Posted: Dec 11, 2009 09:05 AM          Msg. 1 of 4
In the morning, I submit about a dozen subscribe requests. (I'm really only interested in getting the Summary message, if that matters.) According to my logs, it is taking 25 seconds from when I submit the request to when I get the first summary message!

Is this expected behaviour? What can I do to speed this up? I could accept a 0.5-1 second delay but 25 seconds is far too long.

-DTN Guru-
Posts: 2093
Joined: Nov 21, 2005

Posted: Dec 11, 2009 09:14 AM          Msg. 2 of 4
Adrian, I agree, 25s is far too long and certainly not expected behavior.

The first thing we need to troubleshoot this is to confirm that the issue is with the feed itself and not a problem in your application.

The first step to determine if this is the feed or your app is to isolate your app from the issue. I recommend using the developer tools (an example app or the included WatchQuote App) to see if the problem exists there as well (without your app running at all).

Let me know what you are using to test this and let me know the results.

Note, you can also email developer support any information that you would prefer to not post on a public forum (or if it is easier for you).

I am also available in chat (accessible via the web site after you have logged in) during normal business hours.

-Interested User-
Posts: 28
Joined: Oct 24, 2008

Posted: Dec 11, 2009 09:24 AM          Msg. 3 of 4
You're right, it's probably my app, no question. IQFeed has been great which is why this surpriseh me so much. I asked expecting this answer but figuring it was the easiest thing to rule out. I'll run some more tests and let you know if I need more help. Thanks Steve!

-Interested User-
Posts: 28
Joined: Oct 24, 2008

Posted: Dec 11, 2009 10:43 AM          Msg. 4 of 4
Tests with a new app and even with the problem app during the afternoon shows that I'm getting the summary message in <1sec (100-300ms). I'll try running some tests on Monday at the open to see if that changes anything.


Time: Wed April 17, 2024 10:36 AM CFBB v1.2.0 8 ms.
© AderSoftware 2002-2003