$ time /usr/bin/perl -e 'use File::Temp'
real 0m38.796s
user 0m0.109s
sys 0m0.124s
####
$ time /usr/bin/perl -e 'use File::Temp'
real 0m2.498s
user 0m0.124s
sys 0m0.124s
##
##
$ awk '/open: open/{print $2 / 1e6, $7}' strace.out
0.062687 open(/dev/urandom,
0.093652 open(/dev/urandom,
0.162175 open(/dev/null,
0.332337 open(/usr/lib/perl5/5.14/File/Temp.pm,
0.413667 open(/usr/lib/perl5/5.14/strict.pm,
0.574798 open(/usr/lib/perl5/5.14/Carp.pm,
0.647806 open(/usr/lib/perl5/5.14/warnings.pm,
2.12777 open(/usr/lib/perl5/5.14/Exporter.pm,
2.40747 open(/usr/lib/perl5/5.14/i686-cygwin-threads-64int/File/Spec.pm,
2.48178 open(/usr/lib/perl5/5.14/vars.pm,
2.56121 open(/usr/lib/perl5/5.14/warnings/register.pm,
2.83884 open(/usr/lib/perl5/5.14/i686-cygwin-threads-64int/File/Spec/Cygwin.pm,
3.06084 open(/usr/lib/perl5/5.14/i686-cygwin-threads-64int/File/Spec/Unix.pm,
3.59694 open(/usr/lib/perl5/5.14/File/Path.pm,
3.67258 open(/usr/lib/perl5/5.14/i686-cygwin-threads-64int/Cwd.pm,
4.72324 open(/usr/lib/perl5/5.14/XSLoader.pm,
4.94318 open(/usr/lib/perl5/5.14/i686-cygwin-threads-64int/DynaLoader.pm,
5.00538 open(/usr/lib/perl5/5.14/i686-cygwin-threads-64int/Config.pm,
16.219 open(/usr/lib/perl5/5.14/File/Basename.pm,
17.3896 open(/usr/lib/perl5/5.14/i686-cygwin-threads-64int/Fcntl.pm,
17.7389 open(/usr/lib/perl5/5.14/i686-cygwin-threads-64int/IO/Seekable.pm,
17.8311 open(/usr/lib/perl5/5.14/i686-cygwin-threads-64int/IO/Handle.pm,
17.9298 open(/usr/lib/perl5/5.14/Symbol.pm,
18.1662 open(/usr/lib/perl5/5.14/SelectSaver.pm,
18.2823 open(/usr/lib/perl5/5.14/i686-cygwin-threads-64int/IO.pm,
19.0989 open(/usr/lib/perl5/5.14/i686-cygwin-threads-64int/Errno.pm,
19.468 open(/usr/lib/perl5/5.14/base.pm,
19.8129 open(/usr/lib/perl5/5.14/overload.pm,
20.236 open(/usr/lib/perl5/5.14/constant.pm,
22.0238 open(/usr/lib/perl5/5.14/Carp/Heavy.pm,
22.1132 open(/usr/lib/perl5/5.14/Exporter/Heavy.pm,