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