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