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've been using IQFeed 4 in a multi-threaded situation for the last week or two on 2600 symbols or so with 100 simultaneous daily charts, and I have had 100% responsiveness." - Comment from Scott
"I'm satisfied with IQFeed. It's the most reliable and fastest quote feed I have ever used. Although I'm a resident in China, it's still very fast!" - Comment from Xiaofei
"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
"With HUGE volume on AAPL and RIMM for 2 days, everyone in a trading room was whining about freezes, crashes and lag with *******, RealTick, TS and Cyber. InvestorRT with IQFeed was rock solid. I mean SOLID!" - Comment from Public IRC Chat
"Thank you so much - awesome feed, awesome service!" - Comment from Greg via Email
"I use IQ Feed, Great stuff as far as data analysis information, storage and retrieval is concerned." - Comment from Public Forum
"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 just wanted to tell you what a fine job you have been doing. While *******, from what I hear, has been down and out, off and on, IQ feed has held like a champ this week." - Comment from Shirin
"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 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
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 »Regarding streaming bars
Author Topic: Regarding streaming bars (2 messages, Page 1 of 1)

meanit
-Interested User-
Posts: 1
Joined: Feb 5, 2016
Posted: Feb 5, 2016 11:16 AM          Msg. 1 of 2
I am watching 1 min streaming bars for around 488 stock symbols. I have noticed the following behavior and wanted to know if this is as expected or not. I am using only 1 connection in my program. And IQConnect memory usage is 4MB during the run. Upon receiving the bars, I am only doing things like adding it to a local list in memory and log the message to the file for diagnostics purpose.

Among these symbols I am watching, the time difference between the first bar I got and the last one I got is ~57 seconds which means for the Nth min bar, quite some bars are not received until Nth + 57s.

Also noticed that for several symbols, the delay is even more severe (more than 2 minutes).

DTN_Tim Walter
-DTN Guru-
Posts: 1238
Joined: Apr 25, 2006
Posted: Feb 5, 2016 12:12 PM          Msg. 2 of 2
Hello,

Streaming bars will only update when a trade occurs. So if there is a couple minute or longer break in data, you will see a delay in the time before you get an update message to match. And while 4 is probably lower than I would expect to see by a few MB, it sounds like all of your operation is normal.

Tim
 

 

Time: Sun May 19, 2024 9:32 PM CFBB v1.2.0 10 ms.
© AderSoftware 2002-2003