Beefy Boxes and Bandwidth Generously Provided by pair Networks
good chemistry is complicated,
and a little bit messy -LW
 
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":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

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

How do I use this? | Other CB clients
Other Users?
Others meditating upon the Monastery: (3)
As of 2022-07-04 03:15 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found

    Notices?