benchmark-perlformance - Frontend for Benchmark::Perl::Formance


This is the frontend commandline tool for starting the performance benchmark runs.

After running it prints out the results which you can take to compare them to runs with other Perl versions, other architectures, different compile time configuration or on different machines.



  $ benchmark-perlformance
  $ benchmark-perlformance --plugins=SpamAssassin,Fib,Rx
  $ benchmark-perlformance --plugins=SpamAssassin,Fib,Rx -q
  $ benchmark-perlformance --plugins=SpamAssassin,Fib,Rx -v
  $ benchmark-perlformance --plugins=SpamAssassin,Fib,Rx -vv -ccccc

If run directly it uses the perl in your PATH:

  $ /path/to/benchmark-perlformance

To use another Perl start it via

  $ /other/path/to/bin/perl /path/to/benchmark-perlformance

To provide environment variables (for some plugins) you can do

  $ PERLFORMANCE_SHOOTOUT_FASTA_N=5500 benchmark-perlformance [...]


There are some options available.


prints out a help page.


Use only a particular list of sub benchmarks. The comma-separated list refers to Benchmark::Perl::Formance::Plugin::* respectively.


Increases the verbosity level during the run of the benchmarks. Default is only print the result (and maybe some output from external tools).

To increase the number of keys from your Perl Config that are included in the result use one or more -c options.

Please note that only one single -v is not enough to see errors that occur when trying to load a plugin. They are only marked as "skipped". Use -vv to see the error message; -vvv for progress information; -vvvv or more should be used for debugging info.


Be quiet; do not output results.


gives you the most basic information like Perl version, operating system name and architecture, i.e., perlpath, version, archname, archname64, osvers.


adds gccversion, gnulibc_version, usemymalloc, config_args, optimize.


adds ccflags, cppflags, nm_so_opt.


currently does not increase information.


includes all info from Perls %Config hash.

--tapdescription="some description"

When given this will preprend the YAML with a TAP line

  ok some description

This makes it easier for wrappers to embed the output into TAP which otherwise need to differentiate between output (verbose and other) and the YAML.


There are some options available.


If this variable is set to 1 then some plugins try to scale down the stress to take less time (with stupid results, of course). Mostly for easier development.


See Benchmark::Perl::Formance::Plugin::SpamAssassin. Contains the path to the "sa-learn" executable.


See Benchmark::Perl::Formance::Plugin::Threads. Use this many count of threads. Default is 16.


If set to true you can activate the forks drop-in replacement for threads.

See Benchmark::Perl::Formance::Plugin::Threads.


Please read the documentation for the used plugins, as they might need special configuration, usually via environment variables.




Regular expressions


Fibonnacci numbers to stress recursion and function calls.


Fibonnacci numbers with Moose to stress recursion and method calls.


Fibonnacci numbers with Mouse to stress recursion and method calls.


Fibonnacci numbers with plain Perl OO to stress recursion and method calls.


Fibonnacci numbers with threads to stress thread handling.


Runs some Perl benchmarks from the Language Shootout on


Runs part of the Moose testsuite.