Hi , I tried to optimize my file hiXMLDOMParser.pm which i am using
use XML::DOM;
I tried to take profiling using Apache::SmallProf ,and i got XML::DOM.pm.prof under /opt/hiweb/server/logs/smallprof

Then i used 
smallprof> sort -nrk 2 XML::DOM.pm.prof|more
         1 0.054982 0.050000        537:  push (@EXPORT, qw(
         3 0.038814 0.030000       3418:use XML::DOM::DOMException;
         3 0.035562 0.030000       2457:use Carp;
         3 0.035379 0.030000       3815:use XML::DOM::NamedNodeMap;
         3 0.035119 0.010000       1961:use Carp;
         2 0.033434 0.030000       4325:           );
        49 0.027702 0.010000        179:        eval "sub $pkg\::_$_ (
+) { $i }";
         1 0.026273 0.010000        529:  require FileHandle;
         3 0.023238 0.020000        161:    no strict 'refs';
         3 0.021779 0.010000       4270:            use LWP::UserAgent
+;
        85 0.021420 0.030000        186:    ${"$pkg\::EXPORT_TAGS"}{Fi
+elds} = [ 
map { "_$_" } @f ];
         3 0.020408 0.020000       1432:use Carp;
         3 0.020397 0.020000        526:  use XML::DOM::DOMException;
         3 0.018287 0.010000       1286:use Carp;
         1 0.017862 0.010000         41:    require XML::Parser;
         3 0.017679 0.010000       2182:use Carp;
         3 0.017392 0.020000       1665:use Carp;
         3 0.016083 0.000000         37:use XML::RegExp;
         3 0.016081 0.000000       2456:use XML::DOM::NamedNodeMap;
         3 0.014647 0.010000       2854:use Carp;
         3 0.014504 0.000000       1542:use Carp;

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which displays in order
<num> <time> <ctime> <line>:<text>
when i noticed use carp was called 3 times in an file,in turn
85 0.021420 0.030000 186: ${"$pkg\::EXPORT_TAGS"}{Fields} = map { "_$_" } @f ;
was called 85 times.
May i know the reason why this has been called for so many times,and also how to reduce number of calls in my code,reduce 3 calls to one as well as 85 times to some reduced time.Can any one help in this regard.
Thanks,
srini.

In reply to How to optimize perl code by srins

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