There is an example of using the Benchmark module to compare different algorithms at this node on searching for an array index.

One difficult part of benchmarking is keeping track of what you have changed, and what effect these changes had. Here is one way to do it:

First, isolate the part of your code that needs improvement in a subroutine. Then, create new subroutines with different names to try different approaches. Preserve the different implementations of the subroutine in the program. This ensures that you don't accidentally change something else in your code that ruins your comparison data. The Benchmark node mentioned above shows an example of this approach.

If you keep your subroutine short, it is easy for other people, such as Perl Monks, to help speed up your code.

It should work perfectly the first time! - toma


In reply to Re: Re: Question about benchmarking by toma
in thread Question about benchmarking by jryan

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.