On Thu, Aug 9, 2012 at 5:52 PM, ajay paswan <[email protected]> wrote:
> Suppose you are given a program, now you are given a task to minimize
> the time, what will be your approach?
What time?
> and how will you measure the time needed?
> I think if we can get total clock cycle by any mean, that could be the
> best measure. If so, how can I get that?
If you want to measure execution time of a Ruby program there's Benchmark.
irb19robert@fussel:~$ irb19 -r benchmark
irb(main):001:0> Benchmark.measure { sleep 1 }
=> 0.000000 0.000000 0.000000 ( 1.000137)
irb(main):002:0> Benchmark.measure { 10_000.times { |i| 10 + i } }
=> 0.000000 0.000000 0.000000 ( 0.001673)
irb(main):003:0> Benchmark.measure { 1000_000.times { |i| 10 + i } }
=> 0.170000 0.000000 0.170000 ( 0.170213)
irb(main):004:0> Benchmark.bm {|x| x.report("foo") { sleep 1 }}
user system total real
foo 0.000000 0.000000 0.000000 ( 1.000152)
=> [ 0.000000 0.000000 0.000000 ( 1.000152)
]
http://rubydoc.info/stdlib/benchmark/frames
Kind regards
robert
--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/
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