Bencher::Scenario::SPVM::Prime - Benchmark SPVM (check if number is prime)


This document describes version 0.008 of Bencher::Scenario::SPVM::Prime (from Perl distribution Bencher-Scenarios-SPVM), released on 2022-11-24.


To run benchmark with default option:

 % bencher -m SPVM::Prime

For more options (dump scenario, list/include/exclude/add participants, list/include/exclude/add datasets, etc), see bencher or run bencher --help.


Packaging a benchmark script as a Bencher scenario makes it convenient to include/exclude/add participants/datasets (either via CLI or Perl code), send the result to a central repository, among others . See Bencher and bencher (CLI) for more details.


Version numbers shown below are the versions used when running the sample benchmark.

SPVM 0.9662

SPVM::Examples 0.004


  • Inline::C (perl_code)

  • Perl (perl_code)

  • SPVM (perl_code)

  • SPVM_precompile (perl_code)


Run on: perl: v5.34.0, CPU: Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz (2 cores), OS: GNU/Linux Ubuntu version 20.04, OS kernel: Linux version 5.4.0-91-generic.

Benchmark with default options (bencher -m SPVM::Prime):

 | participant     | rate (/s) | time (ms) | pct_faster_vs_slowest | pct_slower_vs_fastest |  errors | samples |
 | Perl            |      22.7 |    44.1   |                 0.00% |              1604.41% | 1.4e-05 |      20 |
 | SPVM            |      43.5 |    23     |                91.93% |               788.05% | 2.7e-06 |      20 |
 | SPVM_precompile |     343.2 |     2.914 |              1414.12% |                12.57% | 2.1e-07 |      20 |
 | Inline::C       |     386.3 |     2.589 |              1604.41% |                 0.00% | 2.1e-07 |      20 |

Formatted as result:

          Rate      P     S   S_p   I:C 
  P     22.7/s     --  -47%  -93%  -94% 
  S     43.5/s    91%    --  -87%  -88% 
  S_p  343.2/s  1413%  689%    --  -11% 
  I:C  386.3/s  1603%  788%   12%    -- 
   I:C: participant=Inline::C
   P: participant=Perl
   S: participant=SPVM
   S_p: participant=SPVM_precompile

To display as an interactive HTML table on a browser, you can add option --format html+datatables.


In this case, SPVM offers ~2x speed-up and near the performance of C code with precompilation.

My general impression on SPVM (Nov 2022, v0.9662): the parser is currently still buggy (e.g. insignificant whitespace causing syntax error). The significant speed-up and native compilation are nice features. If the language proves to be convenient enough for Perl programmers, it might become a useful addition to their toolbox.


Please visit the project's homepage at


Source repository is at


perlancar <>


To contribute, you can send patches by email/via RT, or send pull requests on GitHub.

Most of the time, you don't need to build the distribution yourself. You can simply modify the code, then test via:

 % prove -l

If you want to build the distribution (e.g. to try to install it locally on your system), you can install Dist::Zilla, Dist::Zilla::PluginBundle::Author::PERLANCAR, Pod::Weaver::PluginBundle::Author::PERLANCAR, and sometimes one or two other Dist::Zilla- and/or Pod::Weaver plugins. Any additional steps required beyond that are considered a bug and can be reported to me.


This software is copyright (c) 2022, 2017 by perlancar <>.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.


Please report any bugs or feature requests on the bugtracker website

When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.