http://qs321.pair.com?node_id=817836


in reply to push, assign or split a file?

First let me show some benchmarks that demonstrate that it really is faster to use the while statement in place of a simple assignment.

Your spurious Data::Dumper calls in three of the four subs ruin the benchmark.

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Re^2: push, assign or split a file?
by gam3 (Curate) on Jan 17, 2010 at 16:09 UTC
    The reason that I put the Data::Dumper calls in was to make sure that the ARRAY was really being put into memory and not being delayed. If all of the tests had the Data::Dumper code, it should not affect the outcome.

    I have now made it so that all the tests don't use Data::Dumper.

    -- gam3
    A picture is worth a thousand words, but takes 200K.
[reply]
      If all of the tests had the Data::Dumper code, it should not affect the outcome.

      Indeed it will; if you want to measure IO for reading, don't add IO for writing. IO is too non-deterministic at this level to benchmark accurately and appropriately. (That's even without Benchmark's flaws.)

[reply]
        chromatic there was no output. The Data::Dumper output was just being put in a scalar.
        -- gam3
        A picture is worth a thousand words, but takes 200K.
[reply]

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