/usr/share/doc/libposix-strftime-compiler-perl/examples/benchmark_tz.pl is in libposix-strftime-compiler-perl 0.41-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | use Benchmark qw/:all/;
use POSIX qw//;
use POSIX::strftime::Compiler;
use Time::TZOffset;
my $fmt = '%d/%b/%Y:%T %z';
my @abbr = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
my $t = time;
my @lt = localtime($t);
sub with_sprintf {
sprintf '%02d/%s/%04d:%02d:%02d:%02d %s', $_[3], $abbr[$_[4]], $_[5]+1900,
$_[2], $_[1], $_[0], Time::TZOffset::tzoffset(@_);
}
my $psc = POSIX::strftime::Compiler->new($fmt);
cmpthese(timethese(-1, {
'compiler' => sub {
$psc->to_string(@lt);
},
'compiler_function' => sub {
POSIX::strftime::Compiler::strftime($fmt, @lt);
},
'posix' => sub {
POSIX::strftime($fmt,@lt);
},
'posix_and_locale' => sub {
my $old_locale = POSIX::setlocale(&POSIX::LC_ALL);
POSIX::setlocale(&POSIX::LC_ALL, 'C');
POSIX::strftime($fmt,@lt);
POSIX::setlocale(&POSIX::LC_ALL, $old_locale);
},
# 'compiler_wo_cache' => sub {
# my $compiler2 = POSIX::strftime::Compiler->new($fmt);
# $compiler2->to_string(localtime($t));
# },
'sprintf' => sub {
with_sprintf(@lt);
},
}));
__END__
compiler_function: 1 wallclock secs ( 1.04 usr + 0.00 sys = 1.04 CPU) @ 183794.23/s (n=191146)
posix_and_locale: 1 wallclock secs ( 1.05 usr + 0.00 sys = 1.05 CPU) @ 68265.71/s (n=71679)
sprintf: 1 wallclock secs ( 1.03 usr + 0.00 sys = 1.03 CPU) @ 208775.73/s (n=215039)
Rate posix_and_locale compiler_function compiler sprintf
posix_and_locale 68266/s -- -63% -64% -67%
compiler_function 183794/s 169% -- -3% -12%
compiler 189253/s 177% 3% -- -9%
sprintf 208776/s 206% 14% 10% --
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