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module Benchmark
module Timing
def self.mean(samples)
sum = samples.inject(0) { |acc, i| acc + i }
sum / samples.size
end
def self.variance(samples, m=nil)
m ||= mean(samples)
total = samples.inject(0) { |acc, i| acc + ((i - m) ** 2) }
total / samples.size
end
def self.stddev(samples, m=nil)
Math.sqrt variance(samples, m)
end
def self.resample_mean(samples, resample_times=100)
resamples = []
resample_times.times do
resample = samples.map { samples[rand(samples.size)] }
resamples << Timing.mean(resample)
end
resamples
end
def self.clean_env
# rbx
if GC.respond_to? :run
GC.run(true)
else
GC.start
end
end
end
end
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