OpenJDK 64-Bit Server VM 1.8.0_232-8u232-b09-0ubuntu1~18.04.1-b09 on Linux 4.15.0-1044-aws Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz make_date(): Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative ------------------------------------------------------------------------------------------------------------------------ prepare make_date() 2920 3239 278 34.3 29.2 1.0X make_date(2019, 9, 16) 2322 2371 61 43.1 23.2 1.3X make_date(*, *, *) 4553 4560 6 22.0 45.5 0.6X OpenJDK 64-Bit Server VM 1.8.0_232-8u232-b09-0ubuntu1~18.04.1-b09 on Linux 4.15.0-1044-aws Intel(R) Xeon(R) CPU E5-2670 v2 @ 2.50GHz make_timestamp(): Best Time(ms) Avg Time(ms) Stdev(ms) Rate(M/s) Per Row(ns) Relative ------------------------------------------------------------------------------------------------------------------------ prepare make_timestamp() 3636 3673 38 0.3 3635.7 1.0X make_timestamp(2019, 1, 2, 3, 4, 50.123456) 94 99 4 10.7 93.8 38.8X make_timestamp(2019, 1, 2, 3, 4, 60.000000) 68 80 13 14.6 68.3 53.2X make_timestamp(2019, 12, 31, 23, 59, 60.00) 65 79 19 15.3 65.3 55.7X make_timestamp(*, *, *, 3, 4, 50.123456) 271 280 14 3.7 270.7 13.4X make_timestamp(*, *, *, *, *, 0) 255 263 11 3.9 255.5 14.2X make_timestamp(*, *, *, *, *, 60.0) 254 258 4 3.9 254.2 14.3X make_timestamp(2019, 1, 2, *, *, *) 3714 3722 8 0.3 3713.9 1.0X make_timestamp(*, *, *, *, *, *) 3736 3741 6 0.3 3736.3 1.0X