Support Board
Date/Time: Sun, 11 May 2025 02:18:59 +0000
Post From: Real Time Data Feed quality
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We monitored the packet loss today on the two servers we have. One of the servers did have a minor amount. It was .001%. The other server had a significant amount more. Based on all of our experience we are quite certain this is on the network switch side that Barchart controls and there really is little we can do about it. We will let them know about it again though. Since we do not want any further complaints, you may want to discontinue the use of the Sierra Chart Exchange Data feed and use IQ Feed. The problem is not within our control. Although the packet loss is very low and not generally noticeable, because your methods are extremely sensitive to any differences, even just a few trades, we will not be able to help you because the problem is not within our control. However, part of the problem though is that when you were re-downloading the data, there was an issue where there was some loss from the transition of historical data to real-time data. So the re-downloading brought out a problem when there may not have been one to begin with. We solved that problem for you. Since Barchart changed a network switch, the packet loss we have seen has been very very small but it does occur in tiny quantities. And with the sensitive method you have, you will see small differences when you re-download data depending upon which server the data comes from. A question that comes in my mind in order to keep my sanity for whether I was right or wrong is Why after 17 post did the data feed send me the data as it should on Friday 16th?
Regarding Friday, our understanding is that you are running the latest version which handles transitions from historical data to real-time data without any subsecond data loss and the market activity was low on Friday and there was virtually no loss to the servers.
Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing Date Time Of Last Edit: 2015-10-20 03:18:44
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