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Setup Dedicated Machine Chicago - My experience


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Setup Dedicated Machine Chicago - My experience

  #61 (permalink)
 
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 sam028 
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sysot1t View Post
hilarious... FYI... ICMP packets have no priority... so your little calculation doesnt take network congestion into account which basically means no-prio traffic (specially ICMP) is discarded or delayed based on QoS settings and as such, not always taking the most optimal route, or even the best way to measure RTT..

What is hilarious here ?
What @Fat Tails is writing is that the best delay might be 67ms + few ms for each router (15 hops for me from France for example). No QoS involved here, 67ms + (hops count * 1.5ms) is maybe the best you can have, whatever the protocol used.
I don't see what's wrong here...

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  #62 (permalink)
 
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 Fat Tails 
Berlin, Europe
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sysot1t View Post
hilarious... FYI... ICMP packets have no priority... so your little calculation doesnt take network congestion into account which basically means no-prio traffic (specially ICMP) is discarded or delayed based on QoS settings and as such, not always taking the most optimal route, or even the best way to measure RTT..

In his original post @ Jura asked whether Zenfire had dedicated European servers. My broker has a dedicated server in Switzerland, which is connected to the US. In the past this connection has proven to be faster and more reliable than routing my orders directly to the US server of the broker via my Internet provider(s).

But even with a dedicated connection, you will not be able to reduce latency below 100 ms. With my calculation, I only wanted to show that in the best of all worlds you would still have something like 80+ ms, if you are located in Europe.

Probably not worth looking for an expensive solution, as you will still be last in the line for any high frequency approach. And never try to use satellite connections, the distance and the latency will increase 5 to 10-fold, as those satellites are far away.

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  #63 (permalink)
 sysot1t 
 
Posts: 1,173 since Nov 2009



sam028 View Post
What is hilarious here ?
What @ Fat Tails is writing is that the best delay might be 67ms + few ms for each router (15 hops for me from France for example). No QoS involved here, 67ms + (hops count * 1.5ms) is maybe the best you can have, whatever the protocol used.
I don't see what's wrong here...

what is hilarious is all the "science" behind it, as if it really makes that much of a difference, that he is quoting... I never said that something was wrong, let's not put words into my statement, but that it was hilarious(as in very funny)... as in, am cracking up, lmao because FT always explains things in ways that sounds so convoluted when at times it makes little to no difference..

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  #64 (permalink)
 sysot1t 
 
Posts: 1,173 since Nov 2009


Fat Tails View Post
In his original post @ Jura asked whether Zenfire had dedicated European servers. My broker has a dedicated server in Switzerland, which is connected to the US. In the past this connection has proven to be faster and more reliable than routing my orders directly to the US server of the broker via my Internet provider(s).

But even with a dedicated connection, you will not be able to reduce latency below 100 ms. With my calculation, I only wanted to show that in the best of all worlds you would still have something like 80+ ms, if you are located in Europe.

Probably not worth looking for an expensive solution, as you will still be last in the line for any high frequency approach. And never try to use satellite connections, the distance and the latency will increase 5- to 10-fold, s those satellites are far away.

imagine what the guys from India have to go through... a number of their connections are E1's and via Sat...

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  #65 (permalink)
 Xeno 
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sysot1t View Post
what is hilarious is all the "science" behind it, as if it really makes that much of a difference, that he is quoting... I never said that something was wrong, let's not put words into my statement, but that it was hilarious(as in very funny)... as in, am cracking up, lmao because FT always explains things in ways that sounds so convoluted when at times it makes little to no difference..

Actually it's nice to see the science sometimes, and as for making little or no difference, that's not true either since the distance and the speed of light are the two most important factors in the transatlantic ping time.

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  #66 (permalink)
 
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 Fat Tails 
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sysot1t View Post
what is hilarious is all the "science" behind it, as if it really makes that much of a difference, that he is quoting... I never said that something was wrong, let's not put words into my statement, but that it was hilarious(as in very funny)... as in, am cracking up, lmao because FT always explains things in ways that sounds so convoluted when at times it makes little to no difference..

I think that it makes a difference. This thread is about the advantages of having a machine in Chicago. I do not need it, because I am not a high frequency trader using market orders. But @ liquidcci showed that he could improve his performance by reducing latency.

With my little calculation I just wanted to point out that distance and speed of light are the main limiting factors for latency. I also believe that not all European traders were aware of this, and some had the illusion that they could reduce the latency by changing providers or connecting to a dedicated server. Albeit this is physically impossible.

Conclusion: If your trading approach depends on rapid fills for market orders on an exchange located in Chicago, you cannot do that from a trading PC located in Europe, Singapore or India. Of course it makes little difference, whether the ping is 80, 200 or 400 ms.

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  #67 (permalink)
 
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 liquidcci 
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In my opinion a server in Chicago is well worth it for anyone who has an automated system that trades futures. My system is not high frequency but has a clear benefit on fills even using limit orders.

The latency is just one advantage. Redundant internet connections and redundant power are also some great advantages. While not impossible to get on a home system will not be at the same level. The thought of holding hundreds of thousands of dollars in futures contracts with Time Warner cable as my home internet connection now puts me in a cold sweat just thinking about it. Did it for years what the heck was I thinking.

Also the power in my home has gone out twice since I moved to server in Chicago but my auto system just kept purring along. Gives me warm fuzzies when that happens.

"The day I became a winning trader was the day it became boring. Daily losses no longer bother me and daily wins no longer excited me. Took years of pain and busting a few accounts before finally got my mind right. I survived the darkness within and now just chillax and let my black box do the work."
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  #68 (permalink)
 gomi 
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Fat Tails View Post
For the ping, the signal has to move 13,400 km to Chicago and back to your place. Light travels at the speed of 300,000 km per second in vacuum. For the speed of the signal in a medium, you need to divide that value by the refractionary index. For optical fibre this index is 1.52, so you can assume that your signal travels at a speed about 200,000 km per second.

That means that the best - theoretically obtainable - ping value from the Netherlands to Chicago would be

13,400 km / (200,000 km / sec) = 0.067 seconds = 67 milliseconds

You can't get below that. Add something like 1 millisecond per hop, and you know where you can get at best.

Actually you can do slightly better than that ;-)
QuantLINK: your fiber optic LINK to global trading | QuantHouse, low latency data and algo trading solutions!

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  #69 (permalink)
 
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 Fat Tails 
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My calculation clearly referred to a ping, which travels from the Netherlands to Chicago and back. If you divide the 67 seconds by 2, you will get 33.5 seconds for a one-way trip.

As I can see from the picture, a signal takes 42.0 seconds from London to Chicago to travel via Quant Link. This is not slightly better, but comes close to the theoretical value which I had estimated.

The point is that my calculation was based on a round trip, while the picture shows one-way only.

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  #70 (permalink)
 
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 Big Mike 
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@Fat Tails, let us know when you release your new indicator -- called "Faster Than Light".

FWIW, I've been using @sam028's VPS service for many months now and it's been 100% perfect. I do all my trading on that system and it works great for my needs.

Mike

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