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The biggest item is jitter. That is when the latency varies. So if you are going from 30ms to 100ms back to 30ms that is poor.
Overall speed recommended is over 2 MB per second
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Just saw this...I actually have only been using a high speed cable internet connection through Ninja Trader via Optimus . So I guess I'm not a great resource when it comes to using other types of connections. I will say this however, I do trade very fast moves in CL and they execute immediately and flawlessly . Anyone who has traded Crude Oil can tell you that it moves incredibly fast. Through lots of screen time, I can often catch those blazingly fast spikes it makes. I hit the button, and I am in...immediately. When I click to exit, same story..no hesitation. In fact, I often place stop orders..seconds ahead of a news release, and I can catch the news spike with virtually no slippage at all. I've traded several other platforms before, including MB Trading and a great DMA broker called Advanced Markets. They pale in comparison to the results I get from Rithmic through Optimus. I haven't ran any elaborate tests but the fact that all my trades have executed with perfect precision has been good enough proof for me.
@mattz, 2MB is 16mb/s (how the ISP's usually qoute speed). Whats the recommended latency and jitter, since those are the more important items?
I got 19Mbps, 35ms ping, 4ms jitter.
FYI, you can quickly/easily test your connection speed and latency at speedtest.net and packet loss and jitter at pingtest.net, use the Chicago based server. Would probably be a good idea to close all other applications, and test during active trading times. @lancelottrader, would be interested to see your results of those tests.
I would like to mention that I had two VERY noticeable lags (as in, 5 seconds or so behind) using a demo Rithmic feed on SC, but I have not noticed any problems running Rithmic on NT. You are the third person I have heard who has had Rithmic issues with Sierra. I did not happen to have RTrader up while I noticed the huge lag in Sierra, but based on what I saw I am 99% sure this is not a Rithmic issue, and that is supported by the fact that I have so far not noticed the problem in NT or RTrader. I also had a demo Rithmic position reported strangely and incorrectly in SC, so I think Sierra may want to look at its Rithmic implementation.
Rithmic, as seen running RTrader and in NT for me so far (still in testing), is lightning fast.
EDIT: see a few posts below, also saw the issue in NT so it does not seem to be Sierra related
All I can say is, you should run the demo yourself and give it a try. My experience may not be yours. Maybe there are other factors at play such as my internet connection (though it has given me problems, it has been good as of late), computer, etc. The problems occurred for me at the open, when volume surged, and also as the ES was making new highs and it was pushing heavy volume (actually it was on the day it made 1424s). Check it out for yourself, and your experience may be very different.
Unfortunately, I just saw the big lag again, this time on NT. When Merkel's comments came out at 10:13am ET, I had NT running on a laptop side-by-side with my desktop. This version of NT had no indicators running, only a chart, DOM, and the tape, very minimal. As I noticed it was news, I glanced over, and to my horror I saw the two feeds terribly out of sync. I thought for a second that maybe the Rithmic feed was just super fast. But then I noticed that 03.50 had printed on my desktop, and had not printed on the laptop. This continued for about 10-15 seconds, with a lag at 03.50 again, and again at 03.25, with the TT feed printing seconds ahead of the Rithmic feed. Now, this is a paper trading server Rithmic feed, not a production one. And while the desktop is a bit faster, it is also running a 350MB NT footprint with lots of data loaded, and this was clearly not a machine/software speed issue. It's exactly what I saw on Sierra two weeks ago and last week. My internet speed test shows pings to Chicago and NY under 60ms, with a jitter of max 10ms, and 40Mbps down / 4Mbps up. Both machines are plugged into the same router. Perhaps it's the case that both Sierra and NT are simply too slow to handle the data coming from Rithmic, but I find it hard to believe, and even if that's the case, it's a moot point, as I need at least one of those programs to be able to show me what's going on as it happens. I have seen when NT has issues buffering data quickly, but it never actually lags as it did and as Sierra did with Rithmic. Just reporting what I saw, and sad to report it, because I really wanted Rithmic to work for me, but while it's marginally faster than TT on a tick-per-tick basis, even running side-by-side I see no clear winner all the time in terms of speed, they are both good. If Rithmic wins the speed contest, it's by a very, very thin margin.
I don't know if there is a between Rithmic paper trading feed and live trading feed. But I see no lag at as you mentioned on my live trading feed using NT.
"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."
I suspect you are right, but how would you know if there is a lag--did you have it side-by-side with another data feed for reference? Looking at just it, there is no clue that it's lagging. It's when you see it printing several seconds behind another that it's confirmed.
