Hi-
I have run into some major performance problems when trying to add a single simple metric to the backtest results. I have no doubt that its something I'm doing, I just have no idea what that might be. I have seen a post or two in the past on how to accomplish what I'm trying to do (as the examples below will replicate), but there was no follow up on the performance of the proposed solutions. Since there was no further discussion, I'm wondering if the code is fine but my settings (or something else) may be causing the problem. Below I list what I believe to be all pertinent information - would very much appreciate any help on this.
Base system is tested on 5 symbols, 5min data, from 1/1/2000 - 12/31/2006. Quick AFL is checked in the setting and data is padded and aligned. I'm running the 64bit version of AB 5.22.
Performance without calling CBT : 65 secs
---------------------------------------------------
Performance with the code below added: 72 secs (very good)
SetCustomBacktestProc("");
if (Status("action") == actionPortfolio)
{
bo = GetBacktesterObject(); // Get backtester object
bo.Backtest(True); // Run backtests with no trade listing
stat = bo.GetPerformanceStats(0); // Get Stats object for all trades
winAvgProfit = stat.GetValue("WinnersAvgProfit");
loseAvgLoss = stat.GetValue("LosersAvgLoss");
for (trade = bo.GetFirstTrade(); trade; trade = bo.GetNextTrade())
{ // Loop through all closed trades
prof = trade.GetProfit(); // Get trade profit in dollars
relProf = 0; // This will be profit/avgProfit as %
if (prof > 0) // If a winner (profit > 0)
relProf = prof / winAvgProfit * 100; // Profit relative to average
else // Else if a loser (profit <= 0)
relProf = -prof / loseAvgLoss * 100; // Loss relative to average
trade.AddCustomMetric("Rel Avg Profit%", relProf); // Add metric
} // End of for loop over all trades
bo.ListTrades(); // Generate list of trades
}---------------------------------------------------------------------------------------------------
Performance with the code below added to record ATR at entry: 854 secs
SetCustomBacktestProc("");
if
(Status("action") == actionPortfolio)
{
bo = GetBacktesterObject();
bo.Backtest(True);
dates = DateTime();
bi = BarIndex();
for (trade = bo.GetFirstTrade(); trade; trade = bo.GetNextTrade())
{
SetForeign(trade.Symbol);
entryBar = LastValue(ValueWhen(trade.EntryDateTime == dates, bi));
foreignATR = ATR(14);
trade.AddCustomMetric("Entry ATR",foreignATR[entryBar]);
RestorePriceArrays();
}
bo.ListTrades();
}
Anyone have any ideas where I may be going wrong?