NAME

Dumbbench::Instance::Cmd - Benchmarks an external command

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 class inherits from Dumbbench::Instance and implements benchmarking of external commands.

METHODS

new

Constructor that takes named arguments.

In addition to the properties of the base class, the Dumbbench::Instance::Cmd constructor requires a command parameter. command can either be string specifying the external command with its options or (preferably) a reference to an array of command-name and options (as with the ordinary system builtin).

Optionally, you can provide a dry_run_command option. It has the same structure and purpose as the command option, but it is used for the dry-runs. If dry_run_command is not specified, the dry-run will consist of starting another process that immediately exits.

command

Returns the command that was set on object construction.

dry_run_command

Returns the command that was set for dry-runs on object construction.

SEE ALSO

Dumbbench, Dumbbench::Instance, 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.