Persistence works with committing empty UTxO

[v0d1ch]

Why

To prove that we can load from persistence when we commit empty UTxO (reported by hydra-doom team)

---

• 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

No cost or size differences found

[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	2024-11-14 10:53:57.947378494 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	00e0e6aceb51fcb4fcc5dc6032cc524a641163f0723b25d995de3ae8	12633
μHead	134f18365d53de72b07af2e703c96d8a6f0643c71d4c1a2050b8182a*	11111
νDeposit	2feb47889a4f658dc593cefcb0e37d584b9431944f08a687f3dab4af	4865

• 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	11699	8.69	2.83	0.76
2	11896	11.14	3.66	0.79
3	12099	12.54	4.09	0.81
5	12502	15.86	5.16	0.87
10	13505	24.51	7.96	1.00
24	16321	49.11	15.95	1.38

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	741	3.40	1.74	0.22
3	920	4.39	2.34	0.24
5	1280	6.46	3.61	0.28
10	2173	12.24	7.28	0.40
54	10055	99.20	68.72	1.89

CollectCom transaction costs

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	57	560	23.94	7.01	0.42
2	114	675	33.53	9.69	0.52
3	171	782	40.52	11.77	0.60
4	227	893	48.44	14.03	0.68
5	282	1004	56.61	16.41	0.77
6	339	1116	73.15	20.81	0.94
7	393	1227	76.10	21.87	0.98
8	451	1342	85.94	24.68	1.08
9	504	1449	99.35	28.35	1.22

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	628	22.26	7.22	0.41
2	728	22.25	7.85	0.42
3	950	25.79	9.51	0.47
5	1260	30.62	12.21	0.54
10	1894	36.38	17.18	0.65
42	6837	98.17	55.86	1.65

Close transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	644	24.31	8.00	0.43
2	780	25.79	9.14	0.46
3	984	27.83	10.57	0.49
5	1249	31.08	12.92	0.55
10	2030	39.85	19.31	0.70
43	7158	99.35	61.78	1.71

Contest transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	703	30.32	9.62	0.50
2	769	31.56	10.55	0.52
3	1094	35.12	12.66	0.57
5	1209	37.72	14.56	0.61
10	2213	50.15	22.39	0.81
34	5722	99.38	54.28	1.60

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	11597	25.80	8.77	0.93
2	11754	34.95	11.94	1.04
3	11762	41.46	14.06	1.10
4	11958	51.05	17.33	1.21
5	12206	62.43	21.36	1.35
6	12235	68.90	23.50	1.41
7	12351	77.79	26.44	1.51
8	12602	89.88	30.67	1.65
9	12447	85.62	29.02	1.60
10	12680	99.41	33.71	1.75

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	11693	18.07	6.20	0.86
10	1	57	11726	19.19	6.70	0.87
10	5	285	11862	26.60	9.74	0.96
10	10	570	12032	36.59	13.82	1.07
10	20	1137	12370	54.75	21.30	1.29
10	30	1708	12712	72.54	28.65	1.50
10	40	2275	13049	92.12	36.66	1.73
10	44	2503	13186	98.65	39.38	1.81

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 2024-11-14 10:56:53.334726968 UTC

Baseline Scenario

Number of nodes	1
Number of txs	300
Avg. Confirmation Time (ms)	4.405006903
P99	8.315009179999997ms
P95	5.6884298ms
P50	4.192619ms
Number of Invalid txs	0

Three local nodes

Number of nodes	3
Number of txs	900
Avg. Confirmation Time (ms)	23.825956307
P99	116.04906553999999ms
P95	32.01571025ms
P50	21.491871ms
Number of Invalid txs	0

[github-actions]

Test Results

  5 files  ±0  162 suites  ±0   30m 36s ⏱️ + 2m 7s
555 tests +1  549 ✅ +1  6 💤 ±0  0 ❌ ±0 
557 runs  +1  551 ✅ +1  6 💤 ±0  0 ❌ ±0 

Results for commit 07c960a. ± Comparison against base commit 27fc223.