Common date formats:

Date::Calc

Date::Parse

Date::Parser

DateTime

Time::ParseDate

TimeDate        (only a few hardcoded timezones) (does support languages)

                (does not do parsing of arbitrary dates)

Parsing

Calculations

Business days

Foreign parsing

Recurrences

Timezones

Parse 10,000 dates

Date::Manip 5          8.6 sec

Date::Manip 6          4.1 sec

            format     3.0 sec

            'no' opts  3.8 sec

Date::Parse            0.6 sec     handles multilingual dates

                                   limited number of formats

                                   active development

Date::Time             0.7 sec     (wrapper around Date::Parse)

-------------------

These files are used for running benchmarks and performance testing of Date::Manip.

They are not generally useful, and are not installed anywhere.

Date::Calc    no parsing

              no timezones

              almost no time handling (primarily Y/M/D)

Date::Pcalc   same as Date::Calc

TimeDate      no calculations

  Date::Parse

  Time::Zone

DateTime

DateTime-TimeZone

DateTime-Format

Date::Components

Date::Handler

Time::Format

perl -d:NYTProf parse-1.dm.pl

nytprofhtml

============

time parse-1.dt.pl

parse-1.dt.pl  0.51s user 0.01s system 83% cpu 0.626 total

time ./parse-1.dm_no.pl

./parse-1.dm_no.pl  3.36s user 0.01s system 100% cpu 3.366 total

time ./parse-1.dm5.pl

./parse-1.dm5.pl  6.21s user 0.03s system 100% cpu 6.233 total

time ./parse-1.dm_fo.pl

./parse-1.dm_fo.pl  5.09s user 0.03s system 99% cpu 5.123 total

time ./parse-1.dm.pl

./parse-1.dm.pl  3.64s user 0.04s system 99% cpu 3.706 total

perl -d:NYTProf parse-1.dm6.pl

nytprofhtml

11323   613ms   Date::::_parse_time Date::Manip::Date::_parse_time

11323   442ms   Date::::parse Date::Manip::Date::parse

11324   419ms   TZ::::date_period Date::Manip::TZ::date_period

11323   399ms   Date::::_parse_date_common Date::Manip::Date::_parse_date_common

11323   378ms   Date::::set Date::Manip::Date::set

11324   298ms   TZ::::_all_periods Date::Manip::TZ::_all_periods

11323   248ms   Date::::_parse_date Date::Manip::Date::_parse_date

22646   233ms   Base::::check Date::Manip::Base::check

11323   207ms   Date::::_parse_check Date::Manip::Date::_parse_check

11323   174ms   Date::::_parse_datetime_iso8601 Date::Manip::Date::_parse_datetime_iso8601

11324   163ms   Base::::_now Date::Manip::Base::_now

11323   162ms   Date::::_parse_dow Date::Manip::Date::_parse_dow

22646   159ms   Base::::check_time Date::Manip::Base::check_time

22662   158ms   Base::::_is_int Date::Manip::Base::_is_int

==============

mkdir tz

cd tz

perl -d:NYTProf ../dm5dm6_ex3 6o ../dateset3.txt

nytprofhtml

cd ..

mkdir notz

cd notz

perl -d:NYTProf ../dm5dm6_ex3 6o ../dateset3_notz.txt

nytprofhtml