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Cerebro.plot() memory consumption

  • Hello,
    it seems multiply calls to cerebro.plot(savefile=True) method result in subtile memory leak.
    Here comparative test charts: take a look at BTgymServer process, running backtarder loop, violet line.
    With plotting feature on here is evidence of memory usage increase (40 runs with plot() after every one).
    Second run has no plot calls, memory usage is flat line.

    I guess it can be connected with the known matplotlib memory issues and the fact internalPlot_OldSync.plot() and .savefig() methods do not explicitly close generated matplotlib figures. [or use multiple pyplot import statement]

    Plotting is on:

    Plotting is off: