Re^2: How can one best measure compile time of their Perl script?

Really? Has to be pretty big script to take more than a few millisec. For linux, there's a tool bundled with sources (linux/tools/perf). Far more precise and informational.

$ perf stat perl -c -e1
-e syntax OK

 Performance counter stats for 'perl -c -e1':

          1.188739 task-clock                #    0.792 CPUs utilized          
                 2 context-switches          #    0.002 M/sec                  
                 0 CPU-migrations            #    0.000 K/sec                  
               447 page-faults               #    0.376 M/sec                  
           3499769 cycles                    #    2.944 GHz                    
           2156006 stalled-cycles-frontend   #   61.60% frontend cycles idle   
           1317972 stalled-cycles-backend    #   37.66% backend  cycles idle   
           2415287 instructions              #    0.69  insns per cycle        
                                             #    0.89  stalled cycles per insn
            488421 branches                  #  410.873 M/sec                  
             24245 branch-misses             #    4.96% of all branches        

       0.001500676 seconds time elapsed

Comment on Re^2: How can one best measure compile time of their Perl script?

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Re^3: How can one best measure compile time of their Perl script? by tobyink (Canon) on Nov 30, 2013 at 17:55 UTC
"Really? Has to be pretty big script to take more than a few millisec." This one-liner seems to take more than a few milliseconds: `time perl -c -e'use Moose; 1;'` [download] `use Moops; class Cow :rw { has name => (default => 'Ermintrude') }; say Cow->new->name`	[reply] [d/l]
Re^3: How can one best measure compile time of their Perl script? by taint (Chaplain) on Nov 30, 2013 at 19:31 UTC
Thanks, oiskuu. Nice output. While I do have stat, and lstat for that matter, and of course, perl. I don't have perf -- at least not by name. Probably have something by another name (I'm using BSD). Which means, for the sake of portability, I should use something derived from Perl itself. Though `perl -c` seems to provide some interesting statistics. :) Thanks for the informative response, oiskuu. --Chris #!/usr/bin/perl -Tw use* Perl::Always or die; my $perl_version = (5.12.5); print $perl_version;	[reply]