NAME
Devel::SimpleProfiler - quick and dirty perl code profiler
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SYNPOSIS
Devel::SimpleProfiler::init( "/tmp/tmpfile" , qr/RegexToMatchSubNames/ );
Devel::SimpleProfiler::start;
....
if ( ! fork ) {
Devel::SimpleProfiler::start;
}
....
Devel::SimpleProfiler::analyze( 'total' );
exit ;
performance stats ( all times are in ms)
sub |
-----------------+---------+---------+--------+-------+-------+------
main::test_suite | 1 | 2922 | 2922 | 2922 | 2922 | 2922
OtherThing::fun | 27 | 152 | 1 | 5 | 63 | 0
SomeObj::new | 3 | 26 | 8 | 8 | 8 | 8
....
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DESCRIPTION
This is meant to be a simple way to get a performance benchmark for
perl subs. It uses the fantastic Aspect module written by
Adam Kennedy, Marcel Gruenauer and Ran Eilam to monkey patch select
perl subs and gather statistics about them.
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METHODS
init
init takes two arguments : a temp file to use and a regular expression to find subs to measure. By default , the file is /tmp/foo and the
regex is qr/^main:/ ;
init should be called once for a run.
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analyze
analyze simply outputs the data collected from the profiler so far in
a table with the columns
* sub name
* total number of calls
* total time in ms
* mean time in ms
* average time in ms
* max time in ms
* min time in ms
This can be called as many times as desired. It takes an optional
argument to sort by, which can be one of :
'calls' , 'total' , 'mean' , 'avg' , 'max' , 'min'
The default sorting is by average.
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start
This is called to start or continue the data collection process. It takes
an option regex parameter in case something different is desired than the
one given at init. This must be called to continue the profiling in a
child thread if one is forked.
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CAVEATS
This does not work so well if the subs are dynamically attached methods.
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AUTHOR
Eric Wolf coyocanid @gmail .com
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COPYRIGHT AND LICENSE
Copyright (c) 2015 Eric Wolf. All rights reserved. This program
is free software; you can redistribute it and/or modify it under the
same terms as Perl itself.
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VERSION
Version 1.00 (November 18, 2015))
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