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require 'benchmark'
def bench_array(bm)
arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]
bm.report("2m array.each, 20 Fixnum array") do
i = 0
while i<2_000_000
arr.each {|e| e}
i+=1
end
end
bm.report("2m array.any?(21), 20 Fixnum array") do
i = 0
while i<2_000_000
arr.any? {|e| e == 21}
i+=1
end
end
arr2 = [false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false]
bm.report("2m array.any? no block, 20 boolean array") do
i = 0
while i<2_000_000
arr2.any?
i+=1
end
end
arr3 = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]
bm.report("2m array.any?(), 200 Fixnum array") do
i = 0
while i<200_000
arr3.any? {|e| e == 1000}
i+=1
end
end
end
if $0 == __FILE__
if ARGV[0]
ARGV[0].to_i.times {
Benchmark.bm(40) {|bm| bench_array(bm)}
class Array; alias_method :old_each, :each; def each(*args, &block); old_each(*args, &block); end; end
puts "With overriden Array#each"
Benchmark.bm(40) {|bm| bench_array(bm)}
}
else
Benchmark.bmbm {|bm| bench_array(bm)}
class Array; alias_method :old_each, :each; def each(*args, &block); old_each(*args, &block); end; end
puts "With overriden Array#each"
Benchmark.bmbm {|bm| bench_array(bm)}
end
end
|
