slow_performance.jl

# This stripped down example that has odd performance.  
# It takes about 4 seconds to compile and allocates about 550MB of memory

type T1Type
	f1::Float64
end
T1Type() = T1Type(
	0.0)
type Ts
	T1::T1Type
end
Ts() = Ts(T1Type())

function Base.show(io::IO, fs::Vector{Ts})
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
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	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
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	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
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	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
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	Float64[f.T1.f1 for f in fs]
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	Float64[f.T1.f1 for f in fs]
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	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
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	Float64[f.T1.f1 for f in fs]
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	Float64[f.T1.f1 for f in fs]
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	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
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	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
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	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
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	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
	Float64[f.T1.f1 for f in fs]
end
function Base.show(io::IO, f::Ts)
	show(io, [f])
end

@time t = Ts[Ts(), Ts()]
#@time println(t)  # about 4 sec, 550MB