***** out of memory exception: too much data to print, all output is deleted *****

[adamus]

I got this message in the Output window today.

***** out of memory exception: too much data to print, all output is deleted *****

I haven't seen it before and I would like to find out if it is a problem with the way I have scripted my Print statements to add to the output window.

Please advise,

thanks.

[NinjaTrader_Bertrand]

adamus, I believe there's a limit imposed yes, I'll check with development at what point it would trigger.

[NinjaTrader_Bertrand]

adamus, the limit would be at 10.000.000 lines - I would suggest to revert to custom logging to txt files for your needs then.

[adamus]

Hi Bertrand

10^7 lines - but at what point? I only ever log one line at a time. Although I do considerable logging, there's no way that I got near 1 million lines today doing the logging I always do, let alone 10 million. So I am trying to work out what happened still.

It's not actually a problem anyway because I am used to the Output window buffer filling up and the earlier print statement disappear.

Thanks

[NinjaTrader_Bertrand]

adamus, I could unfortunately not yet deduct how it played out - I agree the line limit would be hard to trigger, were you experiencing a crash at the same time as you perhaps generally ran out of memory on your system? Is a 64 or 32 bit one?

[adamus]

It's a 32 bit system. It didn't crash - at least not at that point - but I was loading a huge amount of data for 20 different instruments in the same strategy.

[NinjaTrader_Austin]

adamus, could you post the code you're using to print to the output window?

[adamus]

private void log(DateTime when, string sysTitle, 
    string marketName, TradingEnabled direction, 
    Period timeFrame, double amount, string msg)
{ 
    string timeFrameName = "n/a  ";
    if (timeFrame != null)
        timeFrameName = timeFrame.Value 
            + timeFrame.Id.ToString().Substring(0,3);
    string logDesc = sysTitle + " " + marketName
        + " " + timeFrameName
        + " " + direction.ToString() + " " + amount.ToString("0");
    string timestamp = when.ToString("yyyy-MM-dd HH:mm:ss");
    if (logging == LogOutput.FILE)
        writeToFile(timestamp + " " + logDesc + " " + msg);
    if (logging == LogOutput.SCREEN)
        Print(timestamp + " " + logDesc + " " + msg);
}

Hi Bertrand,
that's the function I use and the only parameter that can be more than 1 number or 1 word long is the msg parameter, and it's maximum is 100 characters, normally less.

[NinjaTrader_Austin]

How often is this log function called in your scripts?

[adamus]

Every bar, once, maybe twice. Plus on orders & executions, startup, termination.

[NinjaTrader_Bertrand]

adamus, the issue here then is very likely your data(over)loading - NT was running out of memory here and we would then suggest to retry on a streamlining setup not using as much resources. Going 64 bit would also give you access to using more memory since you would not run into Win 32 bit limitations.