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require 'memory_profiler'
n = 10_000
def find_with_proc(argument)
lambda do |lambda_arg|
lambda_arg == argument
end
end
def find(argument, lambda_arg)
lambda_arg == argument
end
puts "#{n} items - ruby #{RUBY_VERSION}"
puts
puts "find_with_proc"
MemoryProfiler.report do
100.times do
1.upto(n).select(&find_with_proc(50))
end
end.pretty_print
puts
puts "find"
MemoryProfiler.report do
100.times do
1.upto(n).select { |i| find(50, i) }
end
end.pretty_print
# $ ruby benchmarks/allocations/2_lambda_ref_find.rb
# 10000 items - ruby 3.2.2
#
# find_with_proc
# Total allocated: 29600 bytes (400 objects)
# Total retained: 0 bytes (0 objects)
#
# allocated memory by gem
# -----------------------------------
# 29600 other
#
# allocated memory by file
# -----------------------------------
# 29600 benchmarks/allocations/2_lambda_ref_find.rb
#
# allocated memory by location
# -----------------------------------
# 21600 benchmarks/allocations/2_lambda_ref_find.rb:22
# 8000 benchmarks/allocations/2_lambda_ref_find.rb:6
#
# allocated memory by class
# -----------------------------------
# 13600 Enumerator
# 8000 Array
# 8000 Proc
#
# allocated objects by gem
# -----------------------------------
# 400 other
#
# allocated objects by file
# -----------------------------------
# 400 benchmarks/allocations/2_lambda_ref_find.rb
#
# allocated objects by location
# -----------------------------------
# 300 benchmarks/allocations/2_lambda_ref_find.rb:22
# 100 benchmarks/allocations/2_lambda_ref_find.rb:6
#
# allocated objects by class
# -----------------------------------
# 200 Array
# 100 Enumerator
# 100 Proc
#
#
# find
# Total allocated: 21600 bytes (300 objects)
# Total retained: 0 bytes (0 objects)
#
# allocated memory by gem
# -----------------------------------
# 21600 other
#
# allocated memory by file
# -----------------------------------
# 21600 benchmarks/allocations/2_lambda_ref_find.rb
#
# allocated memory by location
# -----------------------------------
# 21600 benchmarks/allocations/2_lambda_ref_find.rb:31
#
# allocated memory by class
# -----------------------------------
# 13600 Enumerator
# 8000 Array
#
# allocated objects by gem
# -----------------------------------
# 300 other
#
# allocated objects by file
# -----------------------------------
# 300 benchmarks/allocations/2_lambda_ref_find.rb
#
# allocated objects by location
# -----------------------------------
# 300 benchmarks/allocations/2_lambda_ref_find.rb:31
#
# allocated objects by class
# -----------------------------------
# 200 Array
# 100 Enumerator
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