Well, what I observe is that when I run a strategy with JBT, it (of course allocates memory), when next thing I run a different strategy more memory is allocated. I just tried it with the sample data and the distribution JBT. Only change was to create 20 copies of the Sample strategy. It rapidly builds up from 250 to about 350 MB when more strategies are run. There the curve flattens at some point. However it is a small data set. I have the problem that if I do the same with my installation and my dataset I see a much larger initial memory allocation and actually a similar build up of memory allocation. Thus, at some point it hits the wall and I have to restart JBT to run more strategies. This seems to be in line with the aymptotic build up of memory use.
Klaus Am Montag, 3. Dezember 2012 09:27:58 UTC-5 schrieb nonlinear: > > Charts can (potentially) use enormous amounts of memory, because all of > the historical data with regards to prices and indicators is preserved. For > that reason, in JBT, you can show charts only one at a time. That is, the > chart becomes available after you run a backtest for a given strategy A. If > subsequently you run a backtest for strategy B, the chart for B becomes > available, and the chart for A is no longer in memory. > > On Sun, Dec 2, 2012 at 8:19 PM, Klaus <[email protected] > <javascript:>>wrote: > >> It seems that >> a) if I start a back test of a different strategy, I can no longer >> display an earlier chart. >> (says: run the strategy first) >> b) on the other hand, it seems that if I run a number of different >> strategy, the memory >> is later on not (completely) freed. - I thought this would be the >> charting data. >> >> While both make from their respective point of view sense, both at the >> same time do not >> make much sense. - Or is the loss of memory s.th. different? >> >> Klaus >> >> -- >> You received this message because you are subscribed to the Google Groups >> "JBookTrader" group. >> To view this discussion on the web visit >> https://groups.google.com/d/msg/jbooktrader/-/_UDw8OUOQLQJ. >> To post to this group, send email to [email protected]<javascript:> >> . >> To unsubscribe from this group, send email to >> [email protected] <javascript:>. >> For more options, visit this group at >> http://groups.google.com/group/jbooktrader?hl=en. >> > > -- You received this message because you are subscribed to the Google Groups "JBookTrader" group. To view this discussion on the web visit https://groups.google.com/d/msg/jbooktrader/-/BrvC38YGFrkJ. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jbooktrader?hl=en.
