I'd like to figure out where the memory consumption is. I feel like we could do a better job reducing the cold start memory footprint. I've done some stuff wi

I'd like to figure out where the memory consumption is. I feel like we could do a better job reducing the cold start memory footprint. I've done some stuff with routes, but I feel there are other wins we could get. The good news is we have `ObjectSpace.memsize_of_all`: irb(main):001:0> require 'objspace' => true irb(main):002:0> ObjectSpace.memsize_of_all(String) => 169318 irb(main):003:0> x = 'x' * 1024; nil => nil irb(main):004:0> ObjectSpace.memsize_of_all(String) => 171817 irb(main):005:0> What's cool is that in MRI we can get size of the instruction sequences too: irb(main):005:0> ObjectSpace.memsize_of_all(RubyVM::InstructionSequence) => 1600800 irb(main):006:0> 100.times { |i| eval("def x_#{i}; end") } => 100 irb(main):007:0> ObjectSpace.memsize_of_all(RubyVM::InstructionSequence) => 1711904 Also we can see the delta between methods defined with eval vs define_method: irb(main):011:0> ObjectSpace.memsize_of_all(RubyVM::InstructionSequence) => 1717984 irb(main):012:0> 100.times { |i| define_method("x_#{i}") { } } => 100 irb(main):013:0> ObjectSpace.memsize_of_all(RubyVM::InstructionSequence) => 1722416 :-) EDIT: stop saying "cool" so much. :-/