Refactor: Use PlutusScript instead of SerialisedScript where possible

[ch1bo]

The PlutusScript type is more specific as it carries the plutus version (fixed to V3 in hydra-cardano-api).

This also drops the unused Initial plutus-tx validator.

---

• CHANGELOG update not needed
• Documentation update not needed
• Haddocks update not needed
• No new TODOs introduced

[github-actions]

Transaction cost differences

Script summary

Name	Size (Bytes)
νInitial	$${\color{green}-3.00}$$
νCommit	$${\color{green}-3.00}$$
νHead	$${\color{green}-3.00}$$
μHead	$${\color{green}-3.00}$$
νDeposit	$${\color{green}-3.00}$$

Init transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	-	-	-	-
2	-	-	-	-
3	-	-	-	-
5	-	-	-	-
10	-	-	-	-
44	-	-	-	-

Commit transaction costs

UTxO	Tx size	% max Mem	% max CPU	Min fee ₳
1	-	-	-	-
2	-	-	-	-
3	-	-	-	-
5	-	-	-	-
10	-	-	-	-
54	-	-	-	-

CollectCom transaction costs

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	-	-	-	-	-
2	-	-	-	-	-
3	-	-	-	-	-
4	-	-	-	-	-
5	-	-	-	-	-
6	-	-	-	-	-
7	-	-	-	-	-
8	-	-	-	-	-
9	-	-	-	-	-
10	-	-	-	-	-

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	-	+0.39	+0.09	-
2	-	-	-	-
3	-	+0.38	+0.09	-
5	-	+0.39	+0.09	-
10	-	+0.38	+0.1	-
43	-	-	-	-

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	-	-	-	-
2	-	-	-	-
3	-	-	-	-
5	-	-	-	-
10	-	-	-	-
45	-	-	-	-

Close transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	-	-	-	-
2	-	-	-	-
3	-	-	-	-
5	-	-	-	-
10	-	-	-	-
41	-	-	-	-

Contest transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	-	-	-	-
2	-	-	-	-
3	-	-	-	-
5	-	-	-	-
10	-	-	-	-
33	-	-	-	-

FanOut transaction costs

UTxO, Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
(0, 10)	-	-	-	-	-
(1, 10)	-	-	-	-	-
(5, 10)	-	-	-	-	-
(10, 10)	-	-	-	-	-
(20, 10)	-	-	-	-	-
(40, 10)	-	-	-	-	-
(41, 10)	-	-	-	-	-

[github-actions]

Transaction 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	2025-01-09 07:54:46.66025101 UTC
Max. memory units	14000000
Max. CPU units	10000000000
Max. tx size (kB)	16384

Script summary

Name	Hash	Size (Bytes)
νInitial	c8a101a5c8ac4816b0dceb59ce31fc2258e387de828f02961d2f2045	2652
νCommit	61458bc2f297fff3cc5df6ac7ab57cefd87763b0b7bd722146a1035c	685
νHead	5350e9d521552ebfd9e846fd70c3b801f716fc14296134ec0fb71e97	14492
μHead	6b49dc4e571207d615dba01996548cb610b0caa85c30423d169d0091*	5612
νDeposit	ae01dade3a9c346d5c93ae3ce339412b90a0b8f83f94ec6baa24e30c	1102

• The minting policy hash is only usable for comparison. As the script is parameterized, the actual script is unique per head.

Init transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	6164	10.33	3.30	0.53
2	6367	12.38	3.94	0.56
3	6566	14.09	4.46	0.59
5	6973	18.36	5.81	0.65
10	7975	28.59	9.03	0.80
44	14811	98.21	30.92	1.82

Commit transaction costs

This uses ada-only outputs for better comparability.

UTxO	Tx size	% max Mem	% max CPU	Min fee ₳
1	558	2.44	1.16	0.20
2	739	3.38	1.73	0.22
3	920	4.36	2.33	0.24
5	1279	6.41	3.60	0.28
10	2177	12.13	7.25	0.40
54	10059	98.61	68.52	1.88

CollectCom transaction costs

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	57	525	24.20	7.07	0.42
2	113	636	31.90	9.29	0.50
3	171	747	39.64	11.53	0.59
4	226	858	52.26	14.99	0.72
5	284	969	58.28	16.76	0.78
6	339	1081	73.78	20.98	0.95
7	394	1192	86.75	24.45	1.08
8	451	1303	82.79	23.96	1.05

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	1817	24.13	8.03	0.48
2	1943	25.60	9.16	0.51
3	2119	27.91	10.64	0.55
5	2440	31.00	13.02	0.60
10	3135	40.19	19.33	0.75
42	7831	96.57	59.25	1.70

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	593	22.44	7.26	0.41
2	693	22.39	7.88	0.42
3	828	23.88	8.97	0.44
5	1263	29.87	11.98	0.53
10	2010	39.04	17.89	0.68
43	6977	99.48	56.85	1.67

Close transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	671	28.60	9.16	0.48
2	852	30.84	10.63	0.51
3	943	32.09	11.58	0.53
5	1242	33.56	13.46	0.57
10	1921	42.23	19.62	0.72
38	6433	96.53	56.98	1.62

Contest transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	671	33.35	10.42	0.52
2	824	35.38	11.71	0.56
3	999	37.94	13.26	0.60
5	1331	42.22	16.03	0.67
10	2236	54.68	23.66	0.86
31	5220	97.92	51.35	1.54

Abort transaction costs

There is some variation due to the random mixture of initial and already committed outputs.

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	5966	22.41	7.45	0.65
2	6190	34.69	11.73	0.79
3	6323	43.84	14.89	0.89
4	6456	53.07	17.99	0.99
5	6561	58.20	19.65	1.05
6	6685	70.87	23.99	1.19
7	6875	80.51	27.26	1.30
8	7225	93.74	31.94	1.46

FanOut transaction costs

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

Parties	UTxO	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
10	1	57	6196	20.35	7.07	0.64
10	5	285	6332	28.18	10.22	0.73
10	10	569	6501	37.61	14.03	0.84
10	20	1138	6840	57.56	22.04	1.08
10	30	1707	7181	76.42	29.65	1.30
10	40	2279	7523	95.29	37.26	1.52
10	41	2336	7558	99.03	38.70	1.56

End-to-end benchmark results

This page is intended to collect the latest end-to-end benchmark results produced by Hydra's continuous integration (CI) system from the latest master code.

Please note that these results are approximate as they are currently produced from limited cloud VMs and not controlled hardware. Rather than focusing on the absolute results, the emphasis should be on relative results, such as how the timings for a scenario evolve as the code changes.

Generated at 2025-01-09 07:57:13.646431873 UTC

Baseline Scenario

Number of nodes	1
Number of txs	300
Avg. Confirmation Time (ms)	3.891676393
P99	9.990541989999981ms
P95	4.4889379499999995ms
P50	3.7295175ms
Number of Invalid txs	0

Three local nodes

Number of nodes	3
Number of txs	900
Avg. Confirmation Time (ms)	23.938743636
P99	120.52692504000001ms
P95	32.107490499999976ms
P50	19.596757ms
Number of Invalid txs	0

[github-actions]

Test Results

  5 files  ±0  165 suites  ±0   32m 35s ⏱️ +59s
561 tests ±0  555 ✅ ±0  6 💤 ±0  0 ❌ ±0 
563 runs  ±0  557 ✅ ±0  6 💤 ±0  0 ❌ ±0 

Results for commit f7e2bbe. ± Comparison against base commit dd7634b.

♻️ This comment has been updated with latest results.