bechmark.txt

Warming up --------------------------------------
             dump  :   136.247k i/100ms
             dump2 :   209.935k i/100ms
Calculating -------------------------------------
             dump  :      2.095M (± 3.3%) i/s -     10.491M in   5.013742s
             dump2 :      4.570M (± 5.9%) i/s -     22.883M in   5.032849s

Comparison:
             dump2 ::  4570234.5 i/s
             dump  ::  2094819.0 i/s - 2.18x  slower

code.rb

require 'benchmark/ips'
def dump(value, **options)
  dump_to_io(value, **options)
end

def dump_to_io(value,  compress_threshold: nil)
end

def dump2(value, compress_threshold: nil)
  dump_to_io2(value, compress_threshold: compress_threshold)
end

def dump_to_io2(value,  compress_threshold: nil)
end

require 'memory_profiler'
MemoryProfiler.report { dump(nil) }.pretty_print(to_file: 'report_dump.txt')
MemoryProfiler.report { dump2(nil) }.pretty_print(to_file: 'report_dump2.txt')


Benchmark.ips do |x|
  x.config(time: 5, warmup: 1)
  x.report("dump  :") { dump(nil) }
  x.report("dump2 :") { dump2(nil) }
  x.compare!
end

report_dump.txt

Total allocated: 80 bytes (2 objects)
Total retained:  0 bytes (0 objects)

allocated memory by gem
-----------------------------------
        80  other

allocated memory by file
-----------------------------------
        80  (irb)

allocated memory by location
-----------------------------------
        40  (irb):84
        40  (irb):98

allocated memory by class
-----------------------------------
        80  Hash

allocated objects by gem
-----------------------------------
         2  other

allocated objects by file
-----------------------------------
         2  (irb)

allocated objects by location
-----------------------------------
         1  (irb):84
         1  (irb):98

allocated objects by class
-----------------------------------
         2  Hash

retained memory by gem
-----------------------------------
NO DATA

retained memory by file
-----------------------------------
NO DATA

retained memory by location
-----------------------------------
NO DATA

retained memory by class
-----------------------------------
NO DATA

retained objects by gem
-----------------------------------
NO DATA

retained objects by file
-----------------------------------
NO DATA

retained objects by location
-----------------------------------
NO DATA

retained objects by class
-----------------------------------
NO DATA


Allocated String Report
-----------------------------------

Retained String Report
-----------------------------------

report_dump2.txt

Total allocated: 0 bytes (0 objects)
Total retained:  0 bytes (0 objects)

allocated memory by gem
-----------------------------------
NO DATA

allocated memory by file
-----------------------------------
NO DATA

allocated memory by location
-----------------------------------
NO DATA

allocated memory by class
-----------------------------------
NO DATA

allocated objects by gem
-----------------------------------
NO DATA

allocated objects by file
-----------------------------------
NO DATA

allocated objects by location
-----------------------------------
NO DATA

allocated objects by class
-----------------------------------
NO DATA

retained memory by gem
-----------------------------------
NO DATA

retained memory by file
-----------------------------------
NO DATA

retained memory by location
-----------------------------------
NO DATA

retained memory by class
-----------------------------------
NO DATA

retained objects by gem
-----------------------------------
NO DATA

retained objects by file
-----------------------------------
NO DATA

retained objects by location
-----------------------------------
NO DATA

retained objects by class
-----------------------------------
NO DATA


Allocated String Report
-----------------------------------

Retained String Report
-----------------------------------