use Devel::Size qw[ total_size];;

printf "%30s: %d\n", $_, total_size( $::{ $_ } ) for keys %::;;
_<C:/Perl64/site/lib/auto/Cwd/Cwd.dll: 499
                     version::: 13009
                             /: 490
                        stderr: 303
                           SIG: 5964
                             ,: 509
                         Tie::: 7454
                        utf8::: 5741
                             ": 405
                    constant::: 28942
                          re::: 44435
                  DynaLoader::: 63651
                         mro::: 5947
                       Devel::: 32202
                         Cwd::: 126954
                      strict::: 9683
                        stdout: 303
                             &#8597;: 274
                             |: 500
                      Regexp::: 1266
                        Term::: 1096
                         _code: 493
                   UNIVERSAL::: 3012
                    overload::: 59362
                             $: 293
                          time: 994
                        File::: 82769
                &#8597;E_TRIE_MAXBUF: 323
                         Dos::: 831
                          size: 964
                        Data::: 168049
              _<..\universal.c: 403
                &#8597;E_DEBUG_FLAGS: 319
                     _<HiRes.c: 381
                         BEGIN: 253
                    _<..\mro.c: 391
                             !: 517
                          IO::: 1101
                             &#9788;: 517
                    total_size: 988
                             &#8593;: 370
                            pp: 19157
                             _: 497
                  ActivePerl::: 137287
   _<C:/Perl64/lib/constant.pm: 463
                    Exporter::: 120414
                   Internals::: 4478
                         STDIN: 253
                      Config::: 113324
                    warnings::: 93953
                          DB::: 1071
                        Time::: 47484
                        EPOC::: 833
                   _<.\win32.c: 393
                             &#9644;: 936
                   _<perllib.c: 393
                             2: 524
                       _<Cwd.c: 375
                      cmpthese: 37036
                             1: 533
                  &#8616;ARNING_BITS: 553
                        CORE::: 1086
                      _<Size.c: 379
                   Win32CORE::: 1174
                  attributes::: 1176
                         stdin: 301
                          ARGV: 499
                           INC: 5306
             _<..\activeperl.c: 405
_<C:/Perl64/site/lib/auto/Devel/Size/Size.dll: 533
                      Scalar::: 2018
                           ENV: 10062
                             ?: 493
                        vars::: 15120
                        subs::: 5644
                 _<..\perlio.c: 397
                 _<Win32CORE.c: 397
                    XSLoader::: 27593
                        main::: 1006356
                  AutoLoader::: 40075
                         VMS::: 2363
                        Carp::: 44867
                       Win32::: 17184
                      PerlIO::: 3024
                             0: 541
                            : 850
                _<..\xsutils.c: 399
                             @: 1074
                   Benchmark::: 200847
                             n: 282
                        STDOUT: 255
                             3: 504
                             ]: 393
_<C:/Perl64/lib/auto/Time/HiRes/HiRes.dll: 509
                             &#8616;: 499
                        MIME::: 1412
                        STDERR: 255
                 ActiveState::: 72715
                  _<dl_win32.c: 401
                         sleep: 998