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»Forums Index »Archive (2017 and earlier) »IQFeed Developer Support »Realtime feed delayed
Author Topic: Realtime feed delayed (5 messages, Page 1 of 1)

AHA
-Interested User-
Posts: 37
Joined: Jan 31, 2012


Posted: Dec 2, 2021 09:52 AM          Msg. 1 of 5
My EUREX realtime feed, eg XGZ21 is currently delayed by 4 minutes.

I did a ping and traceroute, looks good, there is no queue in the iqfeed app.

Any ideas?

DTN_Gary_Stephen
-DTN Guru-
Posts: 400
Joined: Jul 3, 2019


Posted: Dec 2, 2021 11:15 AM          Msg. 2 of 5
The "KB Queued" statistic you see in Diagnostics/Client Stats tab measures queueing that happens on the client only. This is data that has already been processed on the IQFeed servers, and is on your local machine, but IQFeed is unable to send to your app. This happens because your app is not reading data fast enough from the feed.

What we're seeing in your case is queueing on the server end. Meaning, the queueing is occurring before the data reaches your machine. This queue will not show up in that KB Queued statistic. When this happens, it suggests possible network degradation between you and our servers, which effectively reduces your available bandwidth. We aren't seeing this delay with other users, and we're aware of any delays in data coming from EUREX, so it is probably unique to your connection.

The best thing you can do is disconnect/reconnect from the IQFeed server, or possibly reboot your machine, and see if you can get a better route to the IQFeed server. That should help alleviate the delay.

Sincerely,
Gary Stephen
DTN IQFeed Implementation Support Specialist

AHA
-Interested User-
Posts: 37
Joined: Jan 31, 2012


Posted: Dec 2, 2021 04:01 PM          Msg. 3 of 5
Thanks for the help.

Did a restart before market close, delay was good for a few seconds, and then back to 4 min.
30 minutes after market close I couldn't reproduce the delay.

Some days there is no delay at all, once in a while I run into these delays.

I have a second feed connected to a Frankfurt farm and never ran into any delays, so the root cause could be the transatlantic line.

I'm really wondering if I am the only European customer affected by these kind of problems, or I am the only one monitoring and logging feed quality :)
Edited by AHA on Dec 2, 2021 at 04:02 PM

DTN_Gary_Stephen
-DTN Guru-
Posts: 400
Joined: Jul 3, 2019


Posted: Dec 2, 2021 04:52 PM          Msg. 4 of 5
IQFeed has lots of users in Europe and around the world, and we're not aware of any widespread issues associated with any geographic areas.

And are you saying the delay went instantly from nothing to 4 minutes? What time did this happen? I can look further on our end.

Sincerely,
Gary Stephen
DTN IQFeed Implementation Support Specialist

AHA
-Interested User-
Posts: 37
Joined: Jan 31, 2012


Posted: Dec 3, 2021 09:47 AM          Msg. 5 of 5
Yesterday the delay went up to 4 minutes, 10 min after the restart at 9:57:38pm CET.

Today I had 5 disconnects at 1:03pm, 1:04pm, 1:05pm and 1:15, and 1:47pm CET, mostly right after a delay of about 5 to 10s. After the last disconnect, the feed has been realtime for about 3 hours now.

You mentioned, that you are able to monitor a clients server queue on your end.
Actually I prefer a server side disconnect when there is a delay of more than 8 seconds in the IQF timestamp, since the feed reconnects automatically within less than 2 seconds.

Are there any plans to implement such a function, or should I implement this rather in my app?
(I know that currently IQF disconnects after no timestamp for 8 seconds at all, but in my case this doesn't help)
 

 

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