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kigster/multi-cpu-benchmark.rb

Last active August 24, 2025 06:31
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multi-cpu-benchmark.rb
require 'benchmark'
require 'etc'
require 'parallel'
input = ('a'..'z').map { |letter| [letter, letter] }.to_h
index = 0
N = 5_000_000
cpu_count = Etc.nprocessors.to_i
cpu_array = (0...cpu_count).to_a
work = ->(count) { count.times { input.map { |key, value| [key.to_sym, value] }.to_h } }
results = Parallel.map(cpu_array, in_processes: cpu_count) do |cpu|
Benchmark.bm do |x|
x.report("cpu #{'%2d' % cpu}") { work[N] }
end
end
# puts results
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