Monthly report January 2024

[ch1bo]

TODO:

• @locallycompact on the API change
• @ch1bo conclusion
• Go through comments from technical writing

---

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

[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	2024-01-31 18:05:46.938456663 UTC
Max. memory units	14000000
Max. CPU units	10000000000
Max. tx size (kB)	16384

Script summary

Name	Hash	Size (Bytes)
νInitial	985245919fcc6c0c5cd116023cd2c947c43e80dcbb5075fe12433fbb	4072
νCommit	7cb20fa71eb4c563ca283566ebe0aa65859d96c3f8cba35c52c181fd	2043
νHead	7a36661f5c15e9f1783aeaab890812c59b7286cbbc6de762d3110772	8816
μHead	8b111ac12274e46314769295a1c5dcab1d260096fc469fd698065463*	3851

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

Cost of Init Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	4375	10.35	3.99	0.46
2	4575	12.68	4.88	0.49
3	4774	15.02	5.77	0.52
5	5177	19.20	7.35	0.59
10	6184	30.24	11.53	0.75
41	12415	98.92	37.55	1.77

Cost of Commit Transaction

This is using ada-only outputs for better comparability.

UTxO	Tx size	% max Mem	% max CPU	Min fee ₳
1	534	11.37	4.44	0.30
2	723	15.04	6.07	0.35
3	911	18.85	7.75	0.40
5	1277	26.90	11.27	0.51
10	2222	49.55	20.97	0.80
19	3896	99.43	41.75	1.43

Cost of CollectCom Transaction

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	57	484	21.12	8.27	0.40
2	114	590	34.11	13.43	0.55
3	170	700	44.77	17.86	0.67
4	227	814	60.34	24.18	0.85
5	282	924	79.03	31.77	1.06
6	338	1031	92.81	37.66	1.22

Cost of Close Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	491	16.23	7.33	0.36
2	757	18.54	9.37	0.40
3	961	20.27	11.00	0.44
5	1208	23.26	13.81	0.49
10	1487	28.22	13.60	0.54
50	8949	97.06	82.96	1.93

Cost of Contest Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	578	20.18	8.94	0.40
2	771	22.30	10.70	0.44
3	963	24.20	12.39	0.48
5	1254	27.71	15.43	0.54
10	2147	37.41	23.78	0.72
43	7641	99.42	76.98	1.84

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	4327	19.02	8.19	0.55
2	4477	31.77	13.85	0.70
3	4669	47.45	20.83	0.89
4	4812	65.96	29.03	1.10
5	4889	80.69	35.37	1.27

Cost of FanOut Transaction

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 ₳
5	0	0	4205	8.26	3.46	0.43
5	1	57	4239	9.28	4.13	0.44
5	5	285	4375	14.40	7.27	0.51
5	10	569	4544	20.34	10.99	0.59
5	20	1139	4884	32.43	18.53	0.76
5	30	1710	5227	44.94	26.25	0.93
5	40	2278	5565	57.33	33.92	1.10
5	50	2844	5901	69.77	41.61	1.27
5	74	4211	6716	99.34	59.96	1.68

End-To-End Benchmark Results

This page is intended to collect the latest end-to-end benchmarks results produced by Hydra's Continuous Integration system from the latest master code.

Please take those results with a grain of salt as they are currently produced from very limited cloud VMs and not controlled hardware. Instead of focusing on the absolute results, the emphasis should be on relative results, eg. how the timings for a scenario evolve as the code changes.

Generated at 2024-01-31 18:07:30.044463337 UTC

Baseline Scenario

Number of nodes	3
Number of txs	9000
Avg. Confirmation Time (ms)	22.346406939
P99	115.53627973000002ms
P95	32.59045329999999ms
P50	19.218775ms
Number of Invalid txs	0

Baseline Scenario

Number of nodes	1
Number of txs	3000
Avg. Confirmation Time (ms)	3.877396738
P99	10.14782836999995ms
P95	4.606088049999999ms
P50	3.6862760000000003ms
Number of Invalid txs	0

[github-actions]

Test Results

407 tests  ±0   400 ✅ ±0   13m 16s ⏱️ +6s
137 suites ±0     7 💤 ±0 
  5 files   ±0     0 ❌ ±0 

Results for commit 29dbba0. ± Comparison against base commit cc97c5f.

♻️ This comment has been updated with latest results.

[ghost]

Minor typos

[ch1bo]

@olgahryniuk @oduameh Commenting on the commit, unfortuantely without suggestions, but I feel this works much better than a separate PR which has conflicts.

Only some semantic changes needed and a few comments on aligning form between us. Please respond directly on the threads and I'll do the ammendments. Next time we can use the +- suggestions here on github or so.

[ch1bo]

@olgahryniuk Addressed all your suggestions and my corrections
@oduameh feel free to also give it a review (Files tab).

I think this is finished and we can publish by approving/merging.