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Feature #3917 » bench.rb

benchmark script - kwatch (makoto kuwata), 10/08/2010 08:45 AM

 
##
## usage: ruby -s bench.rb [-N=100000]
##
## ex.
## $ ./ruby bench.rb
## user system total real
## caller()[0] 1.890000 0.010000 1.900000 ( 1.941812)
## caller()[0] (retrieve) 2.190000 0.010000 2.200000 ( 2.225966)
## called_from() 0.100000 0.000000 0.100000 ( 0.102810)
## called_from() (retrieve) 0.100000 0.000000 0.100000 ( 0.102133)
##

require 'benchmark'

def f1; f2; end
def f2; f3; end
def f3; f4; end
def f4; f5; end
def f5; f6; end
def f6; f7; end
def f7; f8; end
def f8; f9; end
def f9; f10; end

n = ($N || 100000).to_i

Benchmark.bm(30) do |x|

## benchmarks for caller()

def f10
caller()[0]
end

x.report("caller()[0]") do
n.times { f1() }
end

x.report("caller()[0] (retrieve)") do
n.times { f1() =~ /:(\d+)/; fname = $`; lnum = $1.to_i }
end

## benchmarks for called_from()

def f10
called_from()
end

x.report("called_from()") do
n.times { f1() }
end

x.report("called_from() (retrieve)") do
n.times { fname, lnum, func_name = f1(); }
end

end
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