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Hi!
I am seeing a huge precompilation overhead using Julia 1.11:
Julia 1.10
julia> using PrettyTables
julia> A = ones(2, 2)
2×2 Matrix{Float64}:
1.0 1.0
1.0 1.0
julia> @time pretty_table(A)
┌────────┬────────┐
│ Col. 1 │ Col. 2 │
├────────┼────────┤
│ 1.0 │ 1.0 │
│ 1.0 │ 1.0 │
└────────┴────────┘
0.032161 seconds (42.28 k allocations: 3.059 MiB, 97.47% compilation time)
Julia 1.11
julia> using PrettyTables
julia> A = ones(2, 2)
2×2 Matrix{Float64}:
1.0 1.0
1.0 1.0
julia> @time pretty_table(A)
┌────────┬────────┐
│ Col. 1 │ Col. 2 │
├────────┼────────┤
│ 1.0 │ 1.0 │
│ 1.0 │ 1.0 │
└────────┴────────┘
0.125523 seconds (784.80 k allocations: 42.458 MiB, 34.03% gc time, 99.67% compilation time: 78% of which was recompilation)
This issue leads to a very large time to print the first table in PrettyTables.jl. Unfortunately, I could not obtain a minimum working example.
Using --track-compilation, as suggested by @giordano, leads to:
Julia 1.10
precompile(Tuple{typeof(Base.seek), Base.GenericIOBuffer{Array{UInt8, 1}}, Int64})
precompile(Tuple{typeof(Base.something), REPL.LineEdit.Prompt, REPL.LineEdit.Prompt})
precompile(Tuple{typeof(Base.ones), Int64, Int64})
precompile(Tuple{typeof(Base.show), Base.IOContext{Base.TTY}, Base.Multimedia.MIME{Symbol("text/plain")}, Array{Float64, 2}})
precompile(Tuple{typeof(Base.alignment), Base.IOContext{Base.TTY}, Float64})
precompile(Tuple{typeof(Base.show), Base.IOContext{Base.GenericIOBuffer{Array{UInt8, 1}}}, String, Float64})
precompile(Tuple{typeof(Base.replace_in_print_matrix), Array{Float64, 2}, Int64, Int64, String})
precompile(Tuple{Type{Base.IOContext{IO_t} where IO_t<:IO}, Base.TTY, Pair{Symbol, Bool}})
precompile(Tuple{typeof(PrettyTables._preprocess_vec_or_mat), Array{Float64, 2}, Nothing})
precompile(Tuple{typeof(Base.get), Base.IOContext{Base.TTY}, Symbol, Nothing})
precompile(Tuple{typeof(PrettyTables._getdata), Array{Float64, 2}})
precompile(Tuple{Type{Base.IOContext{IO_t} where IO_t<:IO}, Base.IOContext{Base.TTY}, Pair{Symbol, Array{Any, 1}}})
precompile(Tuple{typeof(Base.sym_in), Symbol, NTuple{17, Symbol}})
precompile(Tuple{typeof(Core.kwcall), NamedTuple{(:alignment, :cell_alignment, :header_alignment, :header_cell_alignment, :max_num_of_columns, :max_num_of_rows, :show_header, :show_subheader), Tuple{Symbol, Nothing, Symbol, Nothing, Int64, Int64, Bool, Bool}}, Type{PrettyTables.ProcessedTable}, Array{Float64, 2}, Tuple{Array{String, 1}}})
precompile(Tuple{typeof(Base.escape_string), Base.GenericIOBuffer{Array{UInt8, 1}}, String, String})
precompile(Tuple{typeof(PrettyTables._convert_axes), Array{Float64, 2}, Int64, Int64})
precompile(Tuple{Type{Base.IOContext{IO_t} where IO_t<:IO}, Base.IOContext{Base.TTY}, Pair{Symbol, Bool}, Pair{Symbol, Bool}})
precompile(Tuple{typeof(Core.kwcall), NamedTuple{(:context,), Tuple{Base.IOContext{Base.TTY}}}, typeof(Base.sprint), Function, Float64})
precompile(Tuple{typeof(PrettyTables._flush_display!), Base.IOContext{Base.TTY}, PrettyTables.Display, Bool, Bool, Int64})
precompile(Tuple{typeof(Base.Ryu.writefixed), Float64, Int64})
Julia 1.11
precompile(Tuple{typeof(Base.seek), Base.GenericIOBuffer{GenericMemory{:not_atomic, UInt8, Core.AddrSpace{Core}(0x00)}}, Int64})
precompile(Tuple{typeof(Base.something), REPL.LineEdit.Prompt, REPL.LineEdit.Prompt})
precompile(Tuple{typeof(Base.in), String, Array{String, 1}})
precompile(Tuple{typeof(REPL.LineEdit.history_prev_prefix), REPL.LineEdit.PrefixSearchState, REPL.REPLHistoryProvider, AbstractString})
precompile(Tuple{typeof(Base.ones), Int64, Int64})
precompile(Tuple{typeof(Base.show), Base.IOContext{Base.TTY}, Base.Multimedia.MIME{:var"text/plain"}, Array{Float64, 2}})
precompile(Tuple{typeof(Base.alignment), Base.IOContext{Base.TTY}, Float64})
precompile(Tuple{typeof(Base.show), Base.IOContext{Base.GenericIOBuffer{GenericMemory{:not_atomic, UInt8, Core.AddrSpace{Core}(0x00)}}}, String, Float64})
precompile(Tuple{typeof(Base.replace_in_print_matrix), Array{Float64, 2}, Int64, Int64, String})
precompile(Tuple{typeof(Base.repeat), Char, Int64})
precompile(Tuple{Type{NamedTuple{(:sortkeys,), T} where T<:Tuple}, Tuple{Bool}})
precompile(Tuple{typeof(Base.:(==)), Bool, Bool})
precompile(Tuple{Type{NamedTuple{(:foreground,), T} where T<:Tuple}, Tuple{Symbol}})
precompile(Tuple{typeof(Core.memoryref), GenericMemory{:not_atomic, NamedTuple{(:pos, :active, :index), Tuple{Int64, Bool, Int64}}, Core.AddrSpace{Core}(0x00)}})
precompile(Tuple{typeof(Core.memoryref), GenericMemory{:not_atomic, Array{Pair{Symbol, Any}, 1}, Core.AddrSpace{Core}(0x00)}})
precompile(Tuple{typeof(PrettyTables.pretty_table), Any})
precompile(Tuple{Type{Base.IOContext{IO_t} where IO_t<:IO}, Base.TTY, Pair{Symbol, Bool}})
precompile(Tuple{typeof(PrettyTables._preprocess_vec_or_mat), Array{Float64, 2}, Nothing})
precompile(Tuple{typeof(Core.kwcall), NamedTuple{(:header,), Tuple{Tuple{Array{String, 1}}}}, typeof(PrettyTables._print_table), IO, Any})
precompile(Tuple{typeof(Base.get), Base.IOContext{Base.TTY}, Symbol, Nothing})
precompile(Tuple{typeof(PrettyTables._getdata), Array{Float64, 2}})
precompile(Tuple{Type{Base.IOContext{IO_t} where IO_t<:IO}, Base.IOContext{Base.TTY}, Pair{Symbol, Array{Any, 1}}})
precompile(Tuple{typeof(Core.kwcall), NamedTuple{(:alignment, :cell_alignment, :header_alignment, :header_cell_alignment, :max_num_of_columns, :max_num_of_rows, :show_header, :show_subheader), Tuple{Symbol, Nothing, Symbol, Nothing, Int64, Int64, Bool, Bool}}, Type{PrettyTables.ProcessedTable}, Array{Float64, 2}, Tuple{Array{String, 1}}})
precompile(Tuple{typeof(Base.setindex!), GenericMemory{:not_atomic, Int64, Core.AddrSpace{Core}(0x00)}, Int64, Int64})
precompile(Tuple{typeof(Base.escape_string), Base.GenericIOBuffer{GenericMemory{:not_atomic, UInt8, Core.AddrSpace{Core}(0x00)}}, String, String})
precompile(Tuple{typeof(PrettyTables._convert_axes), Array{Float64, 2}, Int64, Int64})
precompile(Tuple{Type{Base.IOContext{IO_t} where IO_t<:IO}, Base.IOContext{Base.TTY}, Pair{Symbol, Bool}, Pair{Symbol, Bool}})
precompile(Tuple{typeof(Core.kwcall), NamedTuple{(:context,), Tuple{Base.IOContext{Base.TTY}}}, typeof(Base.sprint), Function, Float64})
precompile(Tuple{typeof(PrettyTables._flush_display!), Base.IOContext{Base.TTY}, PrettyTables.Display, Bool, Bool, Int64})
precompile(Tuple{Type{NamedTuple{(:value, :time, :bytes, :gctime, :gcstats, :lock_conflicts, :compile_time, :recompile_time), T} where T<:Tuple}, Tuple{Nothing, Float64, Int64, Float64, Base.GC_Diff, Int64, Float64, Float64}})
precompile(Tuple{typeof(Base.getproperty), NamedTuple{(:value, :time, :bytes, :gctime, :gcstats, :lock_conflicts, :compile_time, :recompile_time), Tuple{Nothing, Float64, Int64, Float64, Base.GC_Diff, Int64, Float64, Float64}}, Symbol})
Is this expected? Is there anything I can do to improve it?
Although I am not 100% sure, I remember testing it in a very earlier version of 1.11 and found not big discrepancy.
EDIT: I cannot understand why I am seeing recompilation of functions like:
precompile(Tuple{typeof(PrettyTables.pretty_table), Any})
since I am using PrecompileTools.jl and it should be already precompiled.
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