Benchmarks

In general, efforts were made to ensure performance during the development of the library, but functionality is the primary focus.
However, to provide some insights, below are some benchmark results for the implementation, including details of the hardware used to run the benchmarks. The benchmarks can also be found in the repository in the benchmarks directory and were implemented using BenchmarkDotNet.

Hardware

BenchmarkDotNet v0.15.8, Windows 11 (10.0.26200.7840/25H2/2025Update/HudsonValley2)
AMD Ryzen 9 7950X3D 4.20GHz, 1 CPU, 32 logical and 16 physical cores
  .NET 10 : .NET 10.0.3 (10.0.3, 10.0.326.7603), X64 RyuJIT x86-64-v4
  .NET 9  : .NET 9.0.13 (9.0.13, 9.0.1326.6317), X64 RyuJIT x86-64-v4
  .NET 8  : .NET 8.0.24 (8.0.24, 8.0.2426.7010), X64 RyuJIT x86-64-v4

Results

Legends

  Mean        : Arithmetic mean of all measurements
  Error       : Half of 99.9% confidence interval
  StdDev      : Standard deviation of all measurements
  P95         : Percentile 95
  Ratio       : Mean of the ratio distribution ([Current]/[Baseline])
  RatioSD     : Standard deviation of the ratio distribution ([Current]/[Baseline])
  Rank        : Relative position of current benchmark mean among all benchmarks (Arabic style)
  Gen0        : GC Generation 0 collects per 1000 operations
  Allocated   : Allocated memory per single operation (managed only, inclusive, 1KB = 1024B)
  1 ns        : 1 Nanosecond (0.000000001 sec)

Method Parse

Method	Runtime	Mean	Error	StdDev	Median	P95	Ratio	RatioSD	Rank	Gen0	Allocated
'Standard: HH:mm:ss'	.NET 10.0	342.8 ns	6.79 ns	14.47 ns	344.1 ns	361.3 ns	0.28	0.01	1	0.0329	1656 B
'Standard: d.HH:mm:ss.fff'	.NET 10.0	351.6 ns	5.05 ns	3.94 ns	352.3 ns	355.7 ns	0.29	0.01	1	0.0334	1688 B
'Human: single unit (5m)'	.NET 10.0	435.1 ns	8.65 ns	12.40 ns	433.8 ns	455.6 ns	0.36	0.01	2	0.0334	1688 B
'Human: two units (1h 30m)'	.NET 10.0	481.4 ns	9.60 ns	9.86 ns	480.7 ns	496.4 ns	0.40	0.01	3	0.0339	1720 B
'Human: full combo' *	.NET 10.0	755.4 ns	15.12 ns	15.53 ns	752.3 ns	780.4 ns	0.62	0.02	5	0.0372	1880 B
'Human: decimals (1.5h 100ms)'	.NET 10.0	631.0 ns	12.25 ns	14.11 ns	631.3 ns	651.2 ns	0.52	0.01	4	0.0353	1816 B
'Invalid input'	.NET 10.0	1,217.5 ns	21.04 ns	18.65 ns	1,221.6 ns	1,239.7 ns	1.00	0.02	6	0.0057	376 B
'Null input'	.NET 10.0	1,215.7 ns	31.72 ns	93.54 ns	1,242.1 ns	1,320.9 ns	1.00	0.08	6	0.0057	328 B
'Standard: HH:mm:ss'	.NET 9.0	327.7 ns	3.95 ns	3.50 ns	327.2 ns	333.2 ns	0.21	0.00	1	0.0329	1656 B
'Standard: d.HH:mm:ss.fff'	.NET 9.0	353.5 ns	2.48 ns	2.20 ns	353.7 ns	356.6 ns	0.23	0.00	2	0.0334	1688 B
'Human: single unit (5m)'	.NET 9.0	485.4 ns	3.31 ns	3.09 ns	486.3 ns	488.5 ns	0.31	0.00	3	0.0334	1688 B
'Human: two units (1h 30m)'	.NET 9.0	517.2 ns	3.41 ns	2.84 ns	516.2 ns	521.9 ns	0.33	0.00	4	0.0339	1720 B
'Human: full combo' *	.NET 9.0	854.6 ns	10.82 ns	10.12 ns	850.6 ns	869.1 ns	0.55	0.01	6	0.0372	1880 B
'Human: decimals (1.5h 100ms)'	.NET 9.0	731.7 ns	9.88 ns	8.75 ns	731.8 ns	744.8 ns	0.47	0.01	5	0.0353	1816 B
'Invalid input'	.NET 9.0	1,553.3 ns	18.43 ns	17.24 ns	1,557.8 ns	1,576.1 ns	1.00	0.02	7	0.0057	376 B
'Null input'	.NET 9.0	1,694.4 ns	20.26 ns	18.95 ns	1,688.6 ns	1,723.9 ns	1.09	0.02	8	0.0057	328 B
'Standard: HH:mm:ss'	.NET 8.0	354.9 ns	3.97 ns	3.52 ns	354.8 ns	359.9 ns	0.11	0.00	1	0.0329	1656 B
'Standard: d.HH:mm:ss.fff'	.NET 8.0	362.9 ns	6.17 ns	5.47 ns	363.1 ns	371.1 ns	0.12	0.00	1	0.0334	1688 B
'Human: single unit (5m)'	.NET 8.0	471.6 ns	4.71 ns	4.17 ns	471.8 ns	478.1 ns	0.15	0.00	2	0.0334	1688 B
'Human: two units (1h 30m)'	.NET 8.0	525.6 ns	7.45 ns	6.97 ns	527.4 ns	535.3 ns	0.17	0.00	3	0.0339	1720 B
'Human: full combo' *	.NET 8.0	843.8 ns	10.36 ns	9.70 ns	843.0 ns	856.3 ns	0.27	0.01	5	0.0372	1880 B
'Human: decimals (1.5h 100ms)'	.NET 8.0	713.0 ns	9.79 ns	8.67 ns	710.4 ns	727.4 ns	0.23	0.00	4	0.0353	1816 B
'Invalid input'	.NET 8.0	3,137.1 ns	60.14 ns	59.07 ns	3,140.0 ns	3,231.1 ns	1.00	0.03	6	0.0076	384 B
'Null input'	.NET 8.0	3,616.1 ns	48.37 ns	45.24 ns	3,611.1 ns	3,678.5 ns	1.15	0.03	7	0.0038	352 B

* full combo = "2 days 4 hours 15 minutes 30 seconds 500 milliseconds"

Method TryParse

Method	Runtime	Mean	Error	StdDev	P95	Ratio	RatioSD	Rank	Gen0	Allocated
'Standard: HH:mm:ss'	.NET 10.0	287.9391 ns	3.2049 ns	2.9979 ns	291.5550 ns	6.76	0.13	3	0.0329	1656 B
'Standard: d.HH:mm:ss.fff'	.NET 10.0	330.6657 ns	2.5955 ns	2.3008 ns	333.3371 ns	7.77	0.14	4	0.0334	1688 B
'Human: single unit (5m)'	.NET 10.0	461.4248 ns	9.0115 ns	14.5519 ns	485.6619 ns	10.84	0.38	5	0.0334	1688 B
'Human: two units (1h 30m)'	.NET 10.0	470.6134 ns	7.8707 ns	7.3623 ns	482.4788 ns	11.05	0.25	5	0.0339	1720 B
'Human: full combo' *	.NET 10.0	719.9095 ns	12.2665 ns	10.8740 ns	736.3521 ns	16.91	0.38	7	0.0372	1880 B
'Human: decimals (1.5h 100ms)'	.NET 10.0	604.6110 ns	10.0666 ns	9.8867 ns	620.0943 ns	14.20	0.33	6	0.0353	1816 B
'Invalid input'	.NET 10.0	42.5874 ns	0.8135 ns	0.7609 ns	43.9415 ns	1.00	0.02	2	-	-
'Null input'	.NET 10.0	1.0329 ns	0.0374 ns	0.0350 ns	1.0840 ns	0.02	0.00	1	-	-
'Standard: HH:mm:ss'	.NET 9.0	350.6555 ns	7.0180 ns	6.5646 ns	360.4509 ns	5.45	0.13	3	0.0329	1656 B
'Standard: d.HH:mm:ss.fff'	.NET 9.0	371.5370 ns	7.3431 ns	7.5408 ns	382.4946 ns	5.78	0.14	4	0.0334	1688 B
'Human: single unit (5m)'	.NET 9.0	494.1462 ns	9.9082 ns	14.8301 ns	508.7619 ns	7.69	0.25	5	0.0334	1688 B
'Human: two units (1h 30m)'	.NET 9.0	529.3066 ns	10.3670 ns	11.5229 ns	551.3136 ns	8.23	0.21	6	0.0334	1720 B
'Human: full combo' *	.NET 9.0	864.3188 ns	12.6515 ns	10.5646 ns	882.7407 ns	13.44	0.25	8	0.0372	1880 B
'Human: decimals (1.5h 100ms)'	.NET 9.0	782.2428 ns	13.3596 ns	15.9036 ns	802.7779 ns	12.17	0.30	7	0.0353	1816 B
'Invalid input'	.NET 9.0	64.3077 ns	1.0813 ns	0.9585 ns	65.5844 ns	1.00	0.02	2	-	-
'Null input'	.NET 9.0	0.8494 ns	0.0154 ns	0.0136 ns	0.8747 ns	0.01	0.00	1	-	-
'Standard: HH:mm:ss'	.NET 8.0	350.2927 ns	6.8227 ns	8.6286 ns	362.9657 ns	5.44	0.16	3	0.0329	1656 B
'Standard: d.HH:mm:ss.fff'	.NET 8.0	369.6096 ns	6.9320 ns	6.4842 ns	378.1941 ns	5.74	0.14	3	0.0334	1688 B
'Human: single unit (5m)'	.NET 8.0	489.8678 ns	8.3834 ns	7.4317 ns	500.9208 ns	7.60	0.17	4	0.0334	1688 B
'Human: two units (1h 30m)'	.NET 8.0	532.1089 ns	10.2960 ns	12.2566 ns	545.7322 ns	8.26	0.23	5	0.0339	1720 B
'Human: full combo' *	.NET 8.0	862.1143 ns	15.3813 ns	13.6351 ns	882.2121 ns	13.38	0.30	7	0.0372	1880 B
'Human: decimals (1.5h 100ms)'	.NET 8.0	770.7357 ns	14.7227 ns	19.1437 ns	798.2340 ns	11.96	0.35	6	0.0353	1816 B
'Invalid input'	.NET 8.0	64.4426 ns	1.1786 ns	1.1024 ns	65.7730 ns	1.00	0.02	2	-	-
'Null input'	.NET 8.0	0.9767 ns	0.0224 ns	0.0210 ns	1.0088 ns	0.02	0.00	1	-	-

* full combo = "2 days 4 hours 15 minutes 30 seconds 500 milliseconds"