Backtester Therory

[robertm1907]

Just a quick question about how the backtester works. When you complete a backtest in the history it shows a list of Ticks with an event when triggered. My question is are these real ticks from historical data, or are they simulated from a higher timeframe? If so what type of data does the BackTester actually download. For example does it download 1 minute bars and simulate ticks within the minute, and create all other higher timeframe bars from these 1 minute bars? I can imagine to download 2 years worth of real tick data would take much longer then it does.
Relates to this post http://fxcodebase.com/code/viewtopic.php?f=31&t=3036

[Apprentice]

Unfortunately, they are simulated.
The amount of data would be enormous.
viewtopic.php?f=31&t=2184
viewtopic.php?f=31&t=3036