Reduce cost of commitTx

[ffakenz]

🦚 By making use of the initial script reference as input reference, we can replace the scripts: v_initial and reduce the cost of the commitTx.

• CHANGELOG is up to date
• Documentation is up to date

[github-actions]

Transactions Costs

Sizes and execution budgets for Hydra protocol transactions. Note that unlisted parameters are currently using arbitrary values and results are not fully deterministic and comparable to previous runs.

Metadata
Generated at	2022-12-14 10:56:24.914785224 UTC
Max. memory units	14000000
Max. CPU units	10000000000
Max. tx size (kB)	16384

Cost of Init Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	4836	9.43	3.72	0.47
2	5038	13.77	5.46	0.52
3	5242	15.37	6.06	0.55
5	5653	20.08	7.90	0.62
10	6678	29.51	11.52	0.77
45	13855	96.61	37.31	1.81

Cost of Commit Transaction

Currently only one UTxO per commit allowed (this is about to change soon)

UTxO	Tx size	% max Mem	% max CPU	Min fee ₳
1	576	20.53	8.33	0.40

Cost of CollectCom Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	13129	21.17	8.49	0.96
2	13380	36.38	14.73	1.14
3	13774	55.88	22.82	1.37
4	14092	77.63	31.86	1.63

Cost of Close Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	9331	8.19	3.36	0.65
2	9494	8.97	3.81	0.67
3	9657	9.75	4.27	0.68
5	10027	11.93	5.41	0.73
10	10841	15.60	7.58	0.81
30	14230	32.81	17.24	1.17
56	14817	34.87	13.23	1.18

Cost of Contest Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	9328	8.16	3.34	0.65
2	9496	8.94	3.79	0.67
3	9660	9.72	4.24	0.68
5	10062	12.35	5.56	0.73
10	10847	15.57	7.56	0.81
30	14225	32.74	17.20	1.16
43	16367	42.78	23.03	1.38

Cost of Abort Transaction

Some variation because of random mixture of still initial and already committed outputs.

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	13562	23.40	9.69	1.01
2	13817	38.24	16.27	1.18
3	13999	54.14	23.17	1.37
4	14037	69.17	29.63	1.54
5	14006	83.25	35.51	1.70

Cost of FanOut Transaction

Involves spending head output and burning head tokens. Uses ada-only UTxO for better comparability.

UTxO	Tx size	% max Mem	% max CPU	Min fee ₳
1	13420	9.88	4.31	0.85
2	13456	11.40	5.19	0.87
3	13556	13.60	6.34	0.90
5	13693	17.27	8.35	0.95
10	13869	24.33	12.52	1.05
50	15181	84.50	47.45	1.84
60	15546	99.75	56.26	2.05

[github-actions]

Test Results

277 tests  ±0   271 ✔️ ±0   15m 54s ⏱️ + 2m 10s
  96 suites ±0       6 💤 ±0 
    5 files   ±0       0 ❌ ±0 

Results for commit 43003c9. ± Comparison against base commit 226e1bf.

[v0d1ch]

Bang! great work guys 🎉