NAME

Dumbbench::Instance - A benchmark instance within a Dumbbench

SYNOPSIS

            

              
              
use Dumbbench;
my $bench = Dumbbench->new(
  target_rel_precision => 0.005, # seek ~0.5%
  initial_runs         => 20,    # the higher the more reliable
);
$bench->add_instances(
  Dumbbench::Instance::Cmd->new(name => 'mauve', command => [qw(perl -e 'something')]),
  # ... more things to benchmark ...
);
$bench->run();
# ...
            
          

DESCRIPTION

This module is the base class for all benchmark instances. For example, for benchmarking external commands, you should use Dumbbench::Instance::Cmd.

The synopsis shows how instances of subclasses of Dumbbench::Instance are added to a benchmark run.

METHODS

new

Constructor that takes named arguments. In this base class, the only recognized argument is an instance name.

timings

Returns the internal array reference of timings or undef if there aren't any.

dry_timings

Same as timings but for dry-run timings.

name

Returns the name of the instance.

clone

Returns a full (deep) copy of the object. May have to be augmented in subclasses.

single_run

Needs to be implemented in subclasses: A method that performs a single benchmark run and returns the duration of the run in seconds.

single_dry_run

Needs to be implemented in subclasses: A method that performs a single dry-run and returns the duration of the run in seconds.

timings_as_histogram

If the optional SOOT module is installed, Dumbbench can generate histograms of the timing distributions.

This method creates such a histogram object (of type TH1D) and returns it. If SOOT is not available, this method returns the empty list.

dry_timings_as_histogram

Same as timings_as_histogram, but for the timings from dry-runs.

SEE ALSO

Dumbbench

Dumbbench::Instance::Cmd, Dumbbench::Instance::PerlEval, Dumbbench::Instance::PerlSub

Dumbbench::Result

Benchmark

Number::WithError does the Gaussian error propagation.

SOOT can optionally generate histograms from the timing distributions.

http://en.wikipedia.org/wiki/Median_absolute_deviation

AUTHOR

Steffen Mueller, <smueller@cpan.org>

COPYRIGHT AND LICENSE

Copyright (C) 2010 by Steffen Mueller

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.1 or, at your option, any later version of Perl 5 you may have available.

cpanm Dumbbench

perl -MCPAN -e shell
install Dumbbench