lots of historical data causes incorrect backtest results

[zooinek]

Hello,

I am not solving any problem right now, I am creating new strategy and I am using your new NinjaTrader7 and I have to tell you its really fantastic.
The new features allow me create multiple timeframe and multiplemarket indicators etc. and its great.

BUT... In NinjaTrader6.5 happening me all the time that when I was doing backtest for example on 0.5 year of historical data, the results of the backtest was incorrect. I mean the strategy didnt work correctly - the trades looks randomly And after than when I was run the strategy one month by one it works correct.
I have to say that the strategy used "Add("anyMarket", PeriodType.Tick, 1);"
so there were lots of data in memory loaded by the backtest and I expect this was the problem or the cause of the strategy executing errors.

And the only thing I want to ask you is if you knew about this problem and if it is solved now in NinjaTrader7 ?
And if really cause of this problem was the "lots of data in memory" because of the 1tick timeframe loaded for the strategy.. ?

Thank you for your responses
Have a nice day

[NinjaTrader_RyanM1]

Hello Zooinek,

Thank you for your post.

The only way to know for sure if this was contributing to your backtest results was if you debugged your code and stepped through it slowly.

We have changed the database storage technology in version 7 that has resulted in significant improvements to memory handling over 6.5.

You can see more information on version 7 including some efficiency tests at this link.