Why does NT6 download new data when I already have history in the DB?

[zoltran]

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Yes, it's todays date, But it seems to reload all the chart data. Not just todays
At least thats what it looks like, as it displays each date it's loading in the dialog box.

And why does it load todays if it's already there?

tia

[NinjaTrader_Ray]

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Here is what I suggest:

Close all windows in NT.
Shut down.
Open a 1 minute chart with start date last Wednesday, end date today.
--> You should see a chart (assuming you have data in the database)
Then connect to eSignal, NTshould only load today's data.

Why? Since for real-time, you always need to have today's data refreshed so the chart is up to date to the second otherwise, you would have a gap in data from the last point in time you were connected.

Ray

[Greg1]

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I believe what I am observing is similar to the other member's observation. Here's what I did to duplicate the problem I am having:

1) Closed Ninja Trader and renamed the .mdb file (to start with a clean db)

2) Started NT (version 6, beta 10) and connected to my data source (ESignal)

3) Opened a market analyzer window with just the instrument columnand a chart window (AAPL stock, 60 min timeframe,45 days back of data). Linked the two windows. On the chart, I added 4 simple moving averages (1000, 500, 200, 50). The chart window is looking at timeframe from 9:30 AM EST to 4:00 PM EST

4) In market analyzer, I loaded the Dow 30 stocks

5) Clicked on AA symbol. Took over 10 seconds for chart window to load

6) Clicked on AIG symbol. Tookover 10seconds for chart window to load

7) Click on AA symbol again (my understanding is that this data is now cached in the mdb file?). Still takes over 10 seconds to load the chart

Note that loading the same chart in ESignal with data since the beginning of the year (about 60 days of data) only takes about 3-4 seconds for every chart even if I go back to a previous symbol. I have avery fast computer and a very fast Comcast Cableinternet connection. I am fairly certain that ESignal does not do any caching of previously requested data.

What is really weird is that if I use daily data timeframe (even if I load 1500 days of data) it takes 1-2 seconds for any symbol on the first request and is almost instantaneous on subsequent requests.

Unfortunately, some of the charts with certain timeframes (like 60 min for example, there are others also)load so slow during the trading day that I don't use them which is contrary to my Ninja Trader goals. Any ideas on how to resolve this would be appreciated.

[NinjaTrader_Dierk]

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I guess I know what's going on. Let me thing about potential resolutions for a while. I will come back to you.

Did you get my other PM of yesterday regarding your issue in the other thread? Could you please follow up by PM? Thanks in advance.

[NinjaTrader_Dierk]

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We created a custom build which should address this issue. Could you please:
- uninstall NT6 via control panel
- clear your browser cache to make sure you get latest download
- install custom build from here: www.ninjatrader-support.com/ninjatrader/nt6/NinjaTrader.Install.msi

[Greg1]

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Yes, I believe this problem is solved !! I'll try to run the desired charts, market analyzer windows during the live trading day on Monday and see if things are improved during live action. If not, I'll provide further details but this is a definite improvement.

THANK YOU

[NinjaTrader_Dierk]

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Great!

[zoltran]

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It's better, but still has issues.

Switching charts using a link'ed MarketAnalyser and chart now works at a reasonable speed, approx 2 to 3 seconds.

However, loading a Market Analyser still take a long time.
First load of the Dow 30 using the attached template took approx 6 minutes.
2nd Loading took 3 minutes .. you still saw the dialog box counting thru the bars


Nasd 100 first load is at GENZ and has been running for 9 minutes.
I suspect it will take 30 min or more to do the initial load. '-(


The template is pretty simple. Just 3 columns with a 5 , 15 and Hourly CCI value displayed. You can tell it's the Hourly taking the time from the way the Loading Data box counts down.

So .. first load . Some slowness is expected, but not this much. It could be an Esig issue .. but as reported in another thread, esig itself loads this quickly

But 2nd load .. should be really fast


And I still don't understand why NT has to reload the days data even if it's already been stored.


I am using the special build posted below, and esignal for backfill.

[NinjaTrader_Dierk]

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Yes, we fixed a hanging issue with B10.

Please:
- uninstall NT6 via control panel
- install latest custom build from here: http://www.ninjatrader-support.com/n...er.Install.msi

[zoltran]

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I am running the special build you posted on Fri APr 6
Is the one you just posted different ?

[NinjaTrader_Dierk]

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Sorry, some forum handling confusion on my end.

Let's focus the issues you and Greg1 experience in this thread: http://ninjatrader.mywowbb.com/forum12/1802.html

I'll post my findings there.