versioning hydra tx observations

[ffakenz]

This PR parametrizes hydra-chain-observer with a SerializedScriptRegistry, which encapsulates the serialized scripts for Hydra contracts.

It also introduces utility functions for parsing SerializedScripts from Plutus cborHex and Aiken compiledCode.

This refactor enables the hydra-chain-observer to run using Hydra scripts from different releases.

---

• CHANGELOG updated or not needed
• Documentation updated or not needed
• Haddocks updated or not needed
• No new TODOs introduced or explained herafter

[github-actions]

Transaction cost differences

Script summary

Name	Size (Bytes)
νInitial	-
νCommit	-
νHead	-
μHead	-
νDeposit	-

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	-	-	-	-	-
10	-	-	-	-	-

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	-	-	-	-
2	-	+0.38	+0.09	+0.01
3	-	-	-	-
5	-	-	-	-
10	-	-	-	-
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	2025-01-07 10:33:33.45751744 UTC
Max. memory units	14000000
Max. CPU units	10000000000
Max. tx size (kB)	16384

Script summary

Name	Hash	Size (Bytes)
νInitial	00a6ddbc130ab92f5b7cb8d1ccd8d79eca5bfe25f6843c07b62841f0	2667
νCommit	3e5a776bcee213e3dfd15806952a10ac5590e3e97d09d62eb99266b2	690
νHead	5350e9d521552ebfd9e846fd70c3b801f716fc14296134ec0fb71e97	14495
μHead	482c3ce15cde05bc905b915ccfa2546e500be1c5d722389026c37aa3*	5615
νDeposit	de09cec5f84eedaf64186cb52ba4ee6e74e6fc368af25b90d457f352	1118

• 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	6165	10.24	3.26	0.53
2	6366	12.21	3.88	0.56
3	6566	14.24	4.52	0.59
5	6969	18.36	5.81	0.65
10	7974	28.42	8.97	0.80
44	14811	98.45	31.01	1.82

Commit transaction costs

This uses ada-only outputs for better comparability.

UTxO	Tx size	% max Mem	% max CPU	Min fee ₳
1	561	2.45	1.17	0.20
2	743	3.40	1.74	0.22
3	923	4.39	2.34	0.24
5	1280	6.46	3.61	0.28
10	2176	12.24	7.28	0.40
54	10075	99.20	68.72	1.89

CollectCom transaction costs

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	56	524	25.00	7.26	0.43
2	112	635	31.97	9.32	0.50
3	170	747	39.90	11.62	0.59
4	226	858	49.33	14.26	0.69
5	282	969	55.56	16.15	0.76
6	337	1081	63.56	18.42	0.84
7	395	1192	81.39	23.07	1.03
8	449	1303	79.13	22.92	1.01

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	1801	23.75	7.93	0.48
2	1947	25.48	9.13	0.51
3	2176	28.92	11.01	0.56
5	2398	31.02	12.95	0.60
10	3162	39.97	19.28	0.75
42	7995	97.81	59.92	1.72

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	604	22.72	7.32	0.41
2	779	24.94	8.63	0.45
3	827	23.92	8.98	0.44
5	1199	28.78	11.68	0.52
10	2108	40.13	18.20	0.70
45	7049	99.00	58.07	1.68

Close transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	639	28.61	9.15	0.48
2	884	29.25	10.20	0.50
3	907	29.69	10.80	0.51
5	1295	34.09	13.74	0.58
10	2174	44.67	20.80	0.76
40	6523	98.11	58.48	1.65

Contest transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	628	32.78	10.14	0.52
2	885	35.95	11.99	0.57
3	941	37.29	12.96	0.59
5	1277	41.61	15.74	0.66
10	2175	54.64	23.57	0.86
33	5329	99.90	53.04	1.57

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	6067	26.21	8.87	0.69
2	6221	35.55	12.08	0.80
3	6195	39.24	13.16	0.83
4	6497	50.74	17.20	0.97
5	6543	58.22	19.68	1.05
6	6696	70.20	23.71	1.18
7	6915	80.37	27.27	1.30
8	7042	89.50	30.31	1.40
9	7145	93.07	31.54	1.44

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	0	0	6162	17.66	6.02	0.61
10	1	57	6196	19.62	6.80	0.63
10	5	284	6331	27.45	9.95	0.72
10	10	568	6500	36.88	13.76	0.83
10	20	1137	6839	57.20	21.90	1.07
10	40	2280	7525	95.65	37.39	1.52
10	42	2394	7592	99.94	39.10	1.57

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 2025-01-07 10:37:08.643836181 UTC

Baseline Scenario

Number of nodes	1
Number of txs	300
Avg. Confirmation Time (ms)	5.400592196
P99	9.340957009999979ms
P95	6.669903650000001ms
P50	5.1955215ms
Number of Invalid txs	0

Three local nodes

Number of nodes	3
Number of txs	900
Avg. Confirmation Time (ms)	22.571800562
P99	40.29306138999999ms
P95	30.539678099999996ms
P50	21.168709999999997ms
Number of Invalid txs	0

[github-actions]

Test Results

  5 files  ±0  165 suites  ±0   31m 5s ⏱️ - 1m 8s
563 tests ±0  557 ✅ ±0  6 💤 ±0  0 ❌ ±0 
565 runs  ±0  559 ✅ ±0  6 💤 ±0  0 ❌ ±0 

Results for commit 5555307. ± Comparison against base commit e0dc991.

♻️ This comment has been updated with latest results.