Re: Function at line ### has more than 60 upvalues

["Alexander Gladysh" <agladysh@...>]

I have forgot to add the most interesting: the method call time
benchmark. Also I have fixed broken metatable (oops). New benchmark is
attached.

Method call time measurements show that metatable call is (as
expected) a bit slower than all others.

$ time lua factorybench.lua clone_method 10000000
       14.51 real        14.36 user         0.04 sys

$ time lua factorybench.lua plain_method 10000000
       14.96 real        14.81 user         0.04 sys

$ time lua factorybench.lua inplace_method 10000000
       14.96 real        14.80 user         0.05 sys

$ time lua factorybench.lua metatable_method 10000000
       16.88 real        16.68 user         0.05 sys


So, if factory is called often, one should use metatable version. If
methods are called often, "plain" version should be used.

Alexander.

P.S. All benchmark results:

$ time lua factorybench.lua inplace_init 10000000
        3.28 real         3.24 user         0.01 sys

$ time lua factorybench.lua clone_init 10000000
       46.73 real        46.32 user         0.14 sys

$ time lua factorybench.lua metatable_init 10000000
       52.93 real        52.50 user         0.17 sys

$ time lua factorybench.lua plain_init 10000000
       54.91 real        54.30 user         0.19 sys



$ time lua factorybench.lua metatable_call 10000000
        5.83 real         5.78 user         0.02 sys

$ time lua factorybench.lua plain_call 10000000
       18.47 real        18.31 user         0.05 sys

$ time lua factorybench.lua inplace_call 10000000
       42.26 real        41.88 user         0.13 sys

$ time lua factorybench.lua clone_call 10000000
       65.01 real        64.38 user         0.18 sys



$ time lua factorybench.lua clone_method 10000000
       14.51 real        14.36 user         0.04 sys

$ time lua factorybench.lua plain_method 10000000
       14.96 real        14.81 user         0.04 sys

$ time lua factorybench.lua inplace_method 10000000
       14.96 real        14.80 user         0.05 sys

$ time lua factorybench.lua metatable_method 10000000
       16.88 real        16.68 user         0.05 sys




$ time luajit -O factorybench.lua inplace_init 10000000
        2.18 real         2.16 user         0.00 sys

$ time luajit -O factorybench.lua clone_init 10000000
       36.92 real        36.54 user         0.12 sys

$ time luajit -O factorybench.lua metatable_init 10000000
       41.47 real        41.21 user         0.14 sys

$ time luajit -O factorybench.lua plain_init 10000000
       48.08 real        47.26 user         0.16 sys



$ time luajit -O factorybench.lua metatable_call 10000000
        3.47 real         3.43 user         0.01 sys

$ time luajit -O factorybench.lua plain_call 10000000
       11.10 real        10.98 user         0.04 sys

$ time luajit -O factorybench.lua inplace_call 10000000
       32.07 real        31.81 user         0.10 sys

$ time luajit -O factorybench.lua clone_call 10000000
       33.76 real        33.44 user         0.11 sys



$ time luajit -O factorybench.lua clone_method 10000000
        1.92 real         1.90 user         0.00 sys

$ time luajit -O factorybench.lua inplace_method 10000000
        1.93 real         1.91 user         0.00 sys

$ time luajit -O factorybench.lua plain_method 10000000
        1.94 real         1.92 user         0.00 sys

$ time luajit -O factorybench.lua metatable_method 10000000
        5.43 real         5.38 user         0.01 sys

Attachment: factorybench.lua
Description: Binary data