Detailed Description

Benchmarks

Component	Specification
Computer Model	Lenovo ThinkPad P15v Gen 3
CPU	12th Gen Intel Core i7-12800H (20 logical, 14 physical cores)
Base Clock	2.80 GHz
Turbo Clock	4.80 GHz
L1 Data Cache	48 KiB (×6 P-cores) + 32 KiB (×8 E-cores)
L1 Instruction Cache	32 KiB (×6 P-cores) + 64 KiB (×2 E-core clusters)
L2 Unified Cache	1.25 MiB (×6 P-cores) + 2 MiB (×2 E-core clusters)
L3 Unified Cache	24 MiB (×1 shared)
RAM	DDR4-3200 (32GB)
GPU	NVIDIA RTX A2000 4GB GDDR6

Platform	OS	Benchmark Framework	C++ Compiler	nfx-datetime Version
Linux	LMDE 7	Google Benchmark v1.9.5	GCC 14.2.0-x64	v0.4.0
Linux	LMDE 7	Google Benchmark v1.9.5	Clang 19.1.7-x64	v0.4.0
Windows	Windows 10	Google Benchmark v1.9.5	MinGW GCC 14.2.0-x64	v0.4.0
Windows	Windows 10	Google Benchmark v1.9.5	MSVC 19.44.35217.0-x64	v0.4.0

Operation	Linux GCC	Linux Clang	Windows MinGW	Windows MSVC
Construct from Y-M-D	10.5 ns	11.2 ns	11.1 ns	22.7 ns
Construct from Y-M-D-H-M-S	10.6 ns	13.6 ns	11.5 ns	21.8 ns
DateTime::now()	36.4 ns	41.2 ns	48.9 ns	51.7 ns
DateTime::utcNow()	14.3 ns	15.0 ns	35.6 ns	19.1 ns
Parse ISO 8601 Basic	16.4 ns	15.8 ns	17.1 ns	28.2 ns
Parse ISO 8601 Precise	21.5 ns	19.8 ns	24.7 ns	34.6 ns
ToString ISO 8601	37.6 ns	35.0 ns	55.5 ns	72.4 ns
toIso8601Extended	43.0 ns	39.1 ns	62.4 ns	81.6 ns
Add TimeSpan	0.108 ns	0.224 ns	0.109 ns	0.737 ns
Subtract TimeSpan	0.111 ns	0.224 ns	0.110 ns	0.738 ns
Subtract DateTime	0.233 ns	0.267 ns	0.233 ns	0.769 ns
ToEpochSeconds	0.106 ns	0.222 ns	0.111 ns	0.943 ns
FromEpochSeconds	0.107 ns	0.216 ns	0.110 ns	0.729 ns
GetComponents	20.2 ns	24.3 ns	20.2 ns	37.9 ns
Comparison	0.423 ns	0.354 ns	0.368 ns	0.774 ns

Operation	Linux GCC	Linux Clang	Windows MinGW	Windows MSVC
Construct with Offset	11.0 ns	11.0 ns	11.0 ns	20.5 ns
DateTimeOffset::now()	36.3 ns	41.5 ns	56.1 ns	57.5 ns
Parse with Offset	20.0 ns	20.0 ns	20.2 ns	34.7 ns
Parse UTC	17.7 ns	19.1 ns	17.9 ns	33.6 ns
ToUTC	0.752 ns	0.509 ns	0.499 ns	1.00 ns
ToOffset	1.01 ns	0.527 ns	0.655 ns	1.05 ns
GetUTCDateTime	0.307 ns	0.491 ns	0.307 ns	1.01 ns
ToString	50.3 ns	55.7 ns	71.6 ns	97.6 ns
Add TimeSpan	0.220 ns	0.222 ns	0.230 ns	0.758 ns
Subtract DateTimeOffset	0.239 ns	0.297 ns	0.296 ns	0.807 ns
Comparison_DifferentOffsets	0.325 ns	0.397 ns	0.341 ns	0.796 ns

Operation	Linux GCC	Linux Clang	Windows MinGW	Windows MSVC
FromHours	0.108 ns	0.219 ns	0.109 ns	0.744 ns
FromMinutes	0.107 ns	0.230 ns	0.110 ns	0.738 ns
FromSeconds	0.107 ns	0.223 ns	0.108 ns	0.728 ns
FromMilliseconds	0.107 ns	0.229 ns	0.112 ns	0.725 ns
Parse ISO 8601 Simple	26.2 ns	26.9 ns	28.2 ns	144 ns
Parse ISO 8601 with Days	46.6 ns	43.5 ns	63.8 ns	138 ns
Parse Numeric	26.5 ns	15.5 ns	37.5 ns	83.7 ns
ToString ISO 8601	13.3 ns	12.0 ns	15.9 ns	30.2 ns
Add	0.110 ns	0.228 ns	0.111 ns	0.729 ns
Subtract	0.110 ns	0.231 ns	0.107 ns	0.874 ns
Negate	0.108 ns	0.223 ns	0.110 ns	0.769 ns
TotalHours	0.107 ns	0.225 ns	0.109 ns	0.759 ns
TotalSeconds	0.108 ns	0.225 ns	0.109 ns	0.736 ns
TotalMilliseconds	0.120 ns	0.232 ns	0.109 ns	0.761 ns
Comparison	0.112 ns	0.231 ns	0.108 ns	0.735 ns

Updated on February 03, 2026