Add docker image for hydra-chain-observer

[ch1bo]

This will be available as a flake output and built by CI into https://github.com/orgs/cardano-scaling/packages

---

• 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	-
νCommit	-
νHead	-
μHead	-
νDeposit	-

Init transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	-	-	-	-
2	-	-	-	-
3	-	-	-	-
5	-	-	-	-
10	-	-	-	-
40	-	-	-	-

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	-	-	-	-	-

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	-	$${\color{green}-0.39}$$	$${\color{green}-0.09}$$	-
2	-	-	-	-
3	-	-	-	-
5	-	-	-	-
10	-	-	-	-
37	-	-	-	-

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	-	-	-	-
2	-	-	-	-
3	-	-	-	-
5	-	-	-	-
10	-	-	-	-
40	-	-	-	-

Close transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	-	-	-	-
2	-	-	-	-
3	-	-	-	-
5	-	-	-	-
10	-	-	-	-
34	-	-	-	-

Contest transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	-	-	-	-
2	-	-	-	-
3	-	-	-	-
5	-	-	-	-
10	-	-	-	-
27	-	-	-	-

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)	-	-	-	-	-
(37, 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	2025-02-10 08:01:13.198012015 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	0e35115a2c7c13c68ecd8d74e4987c04d4539e337643be20bb3274bd	14756
μHead	57166715eadb8d3135964325c016eea546c21e1c0aae974ca67df9a5*	5541
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	6094	10.80	3.35	0.53
2	6295	13.13	4.07	0.56
3	6493	15.77	4.90	0.60
5	6898	19.98	6.17	0.66
10	7904	31.58	9.75	0.82
40	13933	98.18	30.14	1.77

Commit transaction costs

This uses ada-only outputs for better comparability.

UTxO	Tx size	% max Mem	% max CPU	Min fee ₳
1	561	2.44	1.16	0.20
2	736	3.38	1.73	0.22
3	920	4.36	2.33	0.24
5	1283	6.41	3.60	0.28
10	2183	12.13	7.25	0.40
54	10067	98.61	68.52	1.88

CollectCom transaction costs

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	57	525	26.44	7.58	0.44
2	114	636	35.86	10.21	0.54
3	169	747	45.99	13.04	0.65
4	225	858	52.05	14.90	0.72
5	284	969	59.08	16.92	0.79
6	339	1081	72.59	20.52	0.93
7	395	1192	88.65	24.84	1.10
8	448	1303	92.33	26.27	1.14

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	1815	25.03	8.22	0.49
2	1933	27.16	9.50	0.52
3	2105	29.58	11.00	0.56
5	2446	34.20	13.82	0.63
10	2986	39.68	18.74	0.74
37	7364	98.02	55.95	1.67

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	627	23.71	7.55	0.42
2	753	24.89	8.50	0.45
3	930	28.53	10.19	0.50
5	1127	29.63	11.81	0.52
10	2013	43.76	19.03	0.73
38	6109	96.50	52.25	1.58

Close transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	677	29.15	9.20	0.48
2	815	30.98	10.43	0.51
3	933	34.79	12.18	0.56
5	1317	40.76	15.61	0.65
10	2208	49.52	22.03	0.81
33	5543	96.06	52.15	1.55

Contest transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	670	35.95	11.00	0.55
2	882	38.81	12.63	0.59
3	900	39.58	13.32	0.61
5	1271	45.62	16.70	0.70
10	2096	58.22	24.07	0.89
26	4568	98.11	47.40	1.49

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	5986	28.16	9.29	0.71
2	6189	38.40	12.72	0.82
3	6375	48.98	16.25	0.94
4	6376	57.49	18.98	1.03
5	6560	66.81	22.13	1.14
6	6579	71.98	23.69	1.19
7	6872	89.04	29.48	1.38
8	6757	88.82	29.27	1.38

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	6091	20.78	6.84	0.64
10	5	284	6260	29.85	10.44	0.74
10	20	1139	6770	63.18	23.30	1.13
10	30	1708	7111	84.03	31.40	1.37
10	37	2105	7347	98.48	37.03	1.54

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 2025-02-10 08:03:58.657044888 UTC

Baseline Scenario

Number of nodes	1
Number of txs	300
Avg. Confirmation Time (ms)	4.681834693
P99	10.537809539999985ms
P95	6.481732350000002ms
P50	4.389282ms
Number of Invalid txs	0

| Memory data |

2025-02-10 08:02:33.840150793 UTC
Used: 956M, Free: 2228M
2025-02-10 08:02:38.84012018 UTC
Used: 1011M, Free: 2152M
2025-02-10 08:02:43.840022585 UTC
Used: 1008M, Free: 2154M
2025-02-10 08:02:48.839983773 UTC
Used: 1008M, Free: 2154M
2025-02-10 08:02:53.840076044 UTC
Used: 1012M, Free: 2149M
2025-02-10 08:02:58.840014819 UTC
Used: 1012M, Free: 2149M

Three local nodes

Number of nodes	3
Number of txs	900
Avg. Confirmation Time (ms)	24.122747783
P99	118.51693323ms
P95	32.316327ms
P50	21.259672000000002ms
Number of Invalid txs	0

| Memory data |

2025-02-10 08:03:11.686652335 UTC
Used: 929M, Free: 2244M
2025-02-10 08:03:16.686767681 UTC
Used: 1144M, Free: 2028M
2025-02-10 08:03:21.686773568 UTC
Used: 1155M, Free: 2017M
2025-02-10 08:03:26.686763484 UTC
Used: 1154M, Free: 2016M
2025-02-10 08:03:31.686671953 UTC
Used: 1198M, Free: 1903M
2025-02-10 08:03:36.686785743 UTC
Used: 1218M, Free: 1803M
2025-02-10 08:03:41.686716796 UTC
Used: 1218M, Free: 1802M
2025-02-10 08:03:46.686720493 UTC
Used: 1393M, Free: 1603M
2025-02-10 08:03:51.68671996 UTC
Used: 1380M, Free: 1614M
2025-02-10 08:03:56.686790156 UTC
Used: 1261M, Free: 1733M

[github-actions]

Test Results

  5 files  ±0  165 suites  ±0   32m 5s ⏱️ +45s
564 tests ±0  562 ✅ ±0  2 💤 ±0  0 ❌ ±0 
566 runs  ±0  564 ✅ ±0  2 💤 ±0  0 ❌ ±0 

Results for commit c7d7845. ± Comparison against base commit f971747.

♻️ This comment has been updated with latest results.

[noonio]

Nice!