Beefy Boxes and Bandwidth Generously Provided by pair Networks
more useful options
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

IMHE (In My Humble Experience), the sub based profilers often tell you what you already know, i.e. one particular sub is to blame. I found Devel::FastProf a line based profiler, very useful. It gives you information on what parts of the evil sub are the real performance killers. You use fprofpp to read the profile information.

Example output

# fprofpp output format is: # filename:line time count: source test_index.pl:567 7.33688 4248810: next LINE; test_index.pl:100 0.02172 10231: sub trim test_index.pl:154 0.02120 10230: sub rm_cmnts { test_index.pl:468 0.02108 6138: $KEYWORDS[$i]{'max_width'} = length($v +alue); test_index.pl:373 0.01980 7411: return unless (!(-d $_));
This also gives you useful debugging information, i.e. a certain line of code is executed less/more often than anticipated. So in practice I combine DProf and FastProf.

However... then I read about Devel::NYTProf, as suggested by missingthepoint above. It seems to combine the best of both DProf and FastProf and on top of that has tons of extra features. Well, thatís the next one on my TO DO list...


In reply to Re: Profiling your code. by dHarry
in thread Profiling your code. by kyle

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!
  • 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, 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, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others lurking in the Monastery: (3)
    As of 2014-09-15 02:33 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      My favorite cookbook is:










      Results (145 votes), past polls