Have you ever come across this problem?
I am using my MT4 strategy tester to test an EA and after some (about 40-50) runs for a 2 year period (in 30M timeframe) my computer's main hard drive (C drive) fills up !!!
I used WinDirStat to find out which program took all that space and I found that MT4 strategy tester log files were about 200Gb, yes Gigabytes !!!
Can anyone explain that?
Do any of these reasons come to mind?
I don't do my own coding so I wouldn't know if its a coding flaw.
The EA takes about 1300 trades in 2 years, its not a scalper (only 2-3 trades a day), so it couldn't be that.
The strange thing is that I was doing tests for months in 1H timeframe and didn't had this problem.
All started when I began to test a new EA in 30M timeframe !!!
Then have a look at the log (with a viewer able to open such large files) and see what is being output.
It could be error messages due to flawed code which you are not aware of.
EDIT: Alternatively, run the test for only a month of data so that the log file is not so big and you can open it with a normal text editor to see what it is outputting so much!