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Recently I built up my database to include 12 Forex pairs with historical 1-min data going back 10 years or so on each symbol. The total size of the database is only 1.25 GB, which does not seem too bad.
The problem is that when I switch charts from one symbol to another, I notice that mem usage in windows task manager indicates that AB (Broker.exe) keeps growing by 150mb or so, each time I switch symbols, and does not go down. If I switch symbols 6 or 7 times, AB finally crashes.
This is especially cumbersome when I want to Merge each symbol with the latest weekly historical data. After merging a few symbols, AB crashes.
I am running WinXP on a dual quad-core with 8GB RAM, with allowable page file up to 25 GB. The crashes happen on AB 5.24 and 5.25. I imagine the same thing would happen on 5.20 but I have not reverted that far back.
In AB, I have the following set in
Tools--> Preferences --> Data:
In-memory cache size (max. symbols): 20000
(Max MegaBytes): 1000
Number of bars to load: 100
AB does not allow me to set max. symbols to any less than 10. I imagine if I could set that to 1 or 2, that would keep the cache sufficiently low in terms of memory usage.
So the question is - what settings do I need to set, in the Data tab or other tabs, in order to ensure less memory usage to avoid crashes? Again, I only have 12 symbols in the database, and I imagine many users out there have far more than that.
This problem is preventing me from trading more than a couple of symbols at a time, without running into crashes.
Any feedback greatly appreciated.
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