Run it as any other plugin. You can define how many threads should maximally be started. Default is 100.
$ perl-formance --plugins=Threads -DThreads_threadcount=64
Benchmark::Perl::Formance::Plugin::Threads - Stress threading
Too naive. Really.
Steffen Schwigon <email@example.com>
COPYRIGHT AND LICENSE
This software is copyright (c) 2012 by Steffen Schwigon.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.