use lib '/where/you/have/Timers.pm'; use Timers.pm Tstart('ok'); for (@these){ Tstart('one_this'); do { this($_);}; Tstop('one_this'); } for (@these2){ Tstart('one_this2'); do { this($_);}; Tstop('one_this2'); } Tstop('ok); Treport();