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Subject: What are the bandwith requirements to receive the NYSE Quotes feed?

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Ariel
Posts:163

10/17/2006 11:50 AM Quote Reply Alert 
Maximum Message Rate is 4200 MPS
Maximum Packet Size is 1400 bytes
Maximum Number of Messages in a Day are 113,400,000
Our bandwith recommendation is 2 to 4 Mbps

•The maximum message rate may be sustained for a couple of minutes.
•The numbers are based on all feeds added.
•The message size corresponds to the DataFeed message size, without the TCP and IP headers.
•There is only 1 message per packet.
•There maybe more than 1 quote per message
Undisclosed (guest)

01/19/2007 5:40 PM Quote Reply Alert 
There is something that does not make sense.

How can you recommend only 4 Mbps (megabits per second) when the peak rate is 4200 MPS (messages per second).

4200 messages per second * 1400 bytes per message (plus overhead) * 8 bits per byte = 47 Mbps

In other words, it seems to me that 4 Mbps limits the feed to 4e6/8/1400 = 357 messages per second.

Please clarify.
Ariel
Posts:163

01/22/2007 4:55 PM Quote Reply Alert 
No, its 1400 bytes per packet and each packet can have 20 messages. If each message is approximately 60 bytes, asumming we send 20 messages per packet and a rate of 4200mps we would send 210 packets per second. So 1400*210*8 bits per byte is about 2.3 Mbps.
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Forums > Information Products - Datafeeds > Real-Time NYSE Quotes > What are the bandwith requirements to receive the NYSE Quotes feed?

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