Backtesting take very very long and there is "OrderModify er

[thomas2004ch]

Hi TickStory,

I made a backtesting first for the period from 2017.06.01 to 2018.06.15. It takes not long. Later I made the backtesting again but this time I use the period from 2015.06.01 to 2018.06.15. But this time it takes very very long and I get errors in the Journal "OrderModify errror 1". And I notice it takes very long pause to continue writting logs into the Journal. And when I click the Stop, it will also take very long to stop it.

When I use the "Control points ..." or the "Open prices..." model, it is very fast and there is no any error.

Now I try backtesting it for a very short period from 2018.05.01. to 2018.06.15. It will take very long as well. There must be something wrong.


What could be the problem?

[tickstory]

Hi Thomas,

You might want to try some additional trouble-shooting such as trying a different EA and/or putting some debugging code in your EA. Usually if there are a lot of "print" statements in the EA is will take the Journal log some time to catch up.

Regards.

[thomas2004ch]

Hi TickStory,

I've changed to use the other EA such as the default EA "Moving Average" and start the backtesting again. And it is the same, i.e. take very very long to start.

[thomas2004ch]

Now I figured out something as follow:

As I start the backtesting (for EURUSD 15 min chart), I see a warning in the Journal: The '..\MyMetaTrader\tester\history\EURUSD15_0.fxt' is read only. So I delete this file and start the backtesting again. Now it runs much faster. But I see the 'Modelling quality' is just 90.00%.

Why?

[thomas2004ch]

What the backtesting takes "very long" means, during the backtesting, it the backtesting prozess will take quite often a very long pause or sleep and will not go further.

[tickstory]

Hi Thomasch2004, The file you deleted was the tick data file and you are therefore now testing with 1-minute data. Using 1-minute data will always be faster as there is significantly less data to process. You results won't be as accurate though.

Regards.

[thomas2004ch]

Hi TickStory,

I've deinstalled my MT4 and deleted the exported data from TickStory and re-installed the MT4 and export the data from TickStory again. But nothing is better. I understand the importance of the *0.fxt files. But the problem is, why it take so long to do the backtesting with Model "Every ticvk..."? And I notice this jsut happen by EURUSD. By DAX there is no such a problem.

Cheers

[tickstory]

Hi Thomas,

The EURUSD has a lot more ticks than the DAX and this will play a factor. As mentioned, you will need to put the relevant debugging code in your EA if you need further details.

P.S. Could you kindly respond to the PM we have sent you?

Thanks.