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Methods defined with define_method are slower to call #22
Description
While define_method indeed defines methods slighly faster than module_eval, I think it should be noted that calling methods defined with define_method is slower than calling module_eval ones (because define_method creates a closure):
require "benchmark/ips"
object = Class.new {
module_eval "def evaled_method; end"
define_method(:defined_method) {}
}.new
Benchmark.ips do |x|
x.report("module_eval") { object.evaled_method }
x.report("define_method") { object.defined_method }
x.compare!
endCalculating -------------------------------------
module_eval 98.664k i/100ms
define_method 93.809k i/100ms
-------------------------------------------------
module_eval 6.794M (± 8.1%) i/s - 33.743M
define_method 4.588M (± 6.7%) i/s - 22.889M
Comparison:
module_eval: 6793763.3 i/s
define_method: 4587570.1 i/s - 1.48x slower
I think you benefit more from a method being faster to call than faster to define.
Activity
mateusdeap commentedon Sep 27, 2022
I wonder in which category this should go into? Any opinions, @ashwinisukale ?