fix: icid tx version race condition by HinsonSIDAN · Pull Request #4 · deltadefi-protocol/hydra

HinsonSIDAN · 2026-01-21T06:19:14Z

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

This reduces the memory usage significantly (1.7 GB vs. 137 MB for the stress-test I was running) Signed-off-by: Sasha Bogicevic <sasha.bogicevic@iohk.io>

GitHub Actions runners have limited disk space (~14GB available). When building uncached Nix derivations (like our modified hydra-node), the build can exhaust disk space during compilation. This adds a cleanup step that removes unused tools before the build: - .NET SDK (~1.8GB) - Android SDK (~9GB) - GHC (~5GB) - CodeQL (~2.5GB) - Unused Docker images This frees up ~20GB of disk space, ensuring builds complete successfully.

- Add pull_request trigger for PRs targeting master branch - Tag PR builds as pr-<number> for easy identification - Use PR head SHA as version for traceability

github-actions · 2026-01-21T06:42:40Z

Transaction cost differences

No cost or size differences found

github-actions · 2026-01-21T06:52:32Z

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	2026-01-21 06:47:49.245160092 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	a1442faf26d4ec409e2f62a685c1d4893f8d6bcbaf7bcb59d6fa1340	14599
μHead	fd173b993e12103cd734ca6710d364e17120a5eb37a224c64ab2b188*	5284
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	5837	10.40	3.30	0.51
2	6037	12.23	3.86	0.54
3	6236	14.40	4.55	0.57
5	6641	18.84	5.95	0.64
10	7646	28.71	9.03	0.78
43	14281	98.78	30.87	1.80

`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	743	3.38	1.73	0.22
3	923	4.36	2.33	0.24
5	1280	6.41	3.60	0.28
10	2176	12.13	7.25	0.40
54	10068	98.61	68.52	1.88

`CollectCom` transaction costs

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	57	525	25.24	7.32	0.43
2	114	636	32.27	9.39	0.51
3	169	747	41.22	11.92	0.60
4	226	858	49.28	14.22	0.69
5	283	969	60.92	17.43	0.81
6	339	1085	67.93	19.47	0.89
7	395	1196	82.38	23.35	1.04
8	451	1303	91.82	25.96	1.14

Cost of Increment Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	1796	24.37	7.71	0.48
2	1953	25.47	8.70	0.50
3	2059	26.94	9.77	0.53
5	2472	32.83	12.74	0.62
10	3352	45.38	19.57	0.81
40	7558	97.36	54.01	1.66

Cost of Decrement Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	606	22.80	7.37	0.41
2	699	22.58	7.95	0.42
3	963	26.09	9.60	0.47
5	1115	26.94	11.17	0.50
10	1966	38.32	17.69	0.67
41	6642	98.93	55.21	1.64

`Close` transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	665	29.09	8.89	0.48
2	778	30.98	10.08	0.51
3	944	30.98	10.76	0.52
5	1261	35.04	13.25	0.58
10	1935	43.59	18.96	0.72
36	6024	98.70	51.84	1.59

`Contest` transaction costs

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	691	33.83	10.16	0.53
2	812	35.89	11.39	0.56
3	896	37.24	12.41	0.58
5	1249	42.68	15.29	0.66
10	2014	54.09	21.82	0.83
29	4832	96.97	46.41	1.48

`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	5813	27.16	9.12	0.69
2	5937	35.99	12.08	0.79
3	6085	44.75	15.06	0.89
4	6156	50.19	16.82	0.95
5	6283	59.40	19.89	1.05
6	6391	66.83	22.38	1.13
7	6465	73.71	24.69	1.21
8	6720	87.57	29.36	1.37

`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	5834	18.75	6.26	0.60
10	5	285	6004	30.23	10.73	0.74
10	10	569	6173	38.62	14.15	0.84
10	20	1139	6513	60.61	22.74	1.09
10	30	1710	6856	80.92	30.76	1.33
10	39	2222	7162	98.49	37.73	1.53

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 2026-01-21 06:52:19.780487696 UTC

Baseline Scenario

Number of nodes	1
Number of txs	300
Avg. Confirmation Time (ms)	5.798301366
P99	12.52322947999999ms
P95	7.603370650000002ms
P50	5.4294025ms
Number of Invalid txs	0

Memory data

Time	Used	Free
2026-01-21 06:50:51.748485633 UTC	1704M	7133M
2026-01-21 06:50:52.756014743 UTC	1714M	7089M
2026-01-21 06:50:53.74842533 UTC	1732M	7071M
2026-01-21 06:50:54.748419554 UTC	1758M	7044M
2026-01-21 06:50:55.748499646 UTC	1762M	7010M
2026-01-21 06:50:56.748518108 UTC	1804M	6922M
2026-01-21 06:50:57.748548269 UTC	1824M	6900M
2026-01-21 06:50:58.748420895 UTC	1825M	6895M
2026-01-21 06:50:59.748491158 UTC	1831M	6886M
2026-01-21 06:51:00.748487495 UTC	1831M	6886M
2026-01-21 06:51:01.748408238 UTC	1831M	6886M
2026-01-21 06:51:02.748448356 UTC	1831M	6886M
2026-01-21 06:51:03.748489098 UTC	1831M	6886M
2026-01-21 06:51:04.748454407 UTC	1831M	6886M
2026-01-21 06:51:05.74850296 UTC	1831M	6886M
2026-01-21 06:51:06.748484339 UTC	1832M	6885M
2026-01-21 06:51:07.748436421 UTC	1832M	6885M
2026-01-21 06:51:08.748451823 UTC	1832M	6884M
2026-01-21 06:51:09.748441277 UTC	1832M	6884M
2026-01-21 06:51:10.748441534 UTC	1833M	6883M
2026-01-21 06:51:11.748414975 UTC	1834M	6883M
2026-01-21 06:51:12.748472877 UTC	1834M	6883M
2026-01-21 06:51:13.748494841 UTC	1835M	6881M
2026-01-21 06:51:14.74841808 UTC	1836M	6880M
2026-01-21 06:51:15.748490243 UTC	1836M	6880M
2026-01-21 06:51:16.748456457 UTC	1836M	6880M
2026-01-21 06:51:17.748473418 UTC	1836M	6880M
2026-01-21 06:51:18.748431402 UTC	1836M	6880M
2026-01-21 06:51:19.748487695 UTC	1836M	6880M
2026-01-21 06:51:20.748487665 UTC	1837M	6879M

Three local nodes

Number of nodes	3
Number of txs	900
Avg. Confirmation Time (ms)	34.600578044
P99	50.539935500000006ms
P95	45.41854699999999ms
P50	33.63306ms
Number of Invalid txs	0

Memory data

Time	Used	Free
2026-01-21 06:51:32.804483853 UTC	1737M	7016M
2026-01-21 06:51:33.804440382 UTC	1745M	7008M
2026-01-21 06:51:34.804409905 UTC	1746M	7007M
2026-01-21 06:51:35.804415375 UTC	1748M	7005M
2026-01-21 06:51:36.804396627 UTC	1748M	7005M
2026-01-21 06:51:37.804454286 UTC	1749M	7003M
2026-01-21 06:51:38.804505352 UTC	1761M	6991M
2026-01-21 06:51:39.804638141 UTC	1813M	6911M
2026-01-21 06:51:40.804541261 UTC	1867M	6829M
2026-01-21 06:51:41.806270102 UTC	1939M	6730M
2026-01-21 06:51:42.804544665 UTC	1982M	6687M
2026-01-21 06:51:43.804932368 UTC	1982M	6687M
2026-01-21 06:51:44.804651376 UTC	2019M	6640M
2026-01-21 06:51:45.805505767 UTC	2026M	6623M
2026-01-21 06:51:46.805085024 UTC	2043M	6597M
2026-01-21 06:51:47.805277915 UTC	2048M	6582M
2026-01-21 06:51:48.806191449 UTC	2055M	6565M
2026-01-21 06:51:49.804590744 UTC	2064M	6546M
2026-01-21 06:51:50.807616538 UTC	2074M	6526M
2026-01-21 06:51:51.804717651 UTC	2081M	6509M
2026-01-21 06:51:52.806577469 UTC	2085M	6496M
2026-01-21 06:51:53.804621149 UTC	2089M	6481M
2026-01-21 06:51:54.804663949 UTC	2091M	6474M
2026-01-21 06:51:55.805266381 UTC	2092M	6474M
2026-01-21 06:51:56.804524819 UTC	2093M	6472M
2026-01-21 06:51:57.804512375 UTC	2095M	6470M
2026-01-21 06:51:58.804510187 UTC	2099M	6466M
2026-01-21 06:51:59.804640014 UTC	2100M	6465M
2026-01-21 06:52:00.804554805 UTC	2100M	6465M
2026-01-21 06:52:01.804765416 UTC	2101M	6463M
2026-01-21 06:52:02.804513162 UTC	2101M	6463M
2026-01-21 06:52:03.804616391 UTC	2102M	6462M
2026-01-21 06:52:04.804476374 UTC	2102M	6462M
2026-01-21 06:52:05.804600904 UTC	2103M	6461M
2026-01-21 06:52:06.804567086 UTC	2103M	6460M
2026-01-21 06:52:07.80465681 UTC	2103M	6460M
2026-01-21 06:52:08.804526797 UTC	2106M	6457M
2026-01-21 06:52:09.804547155 UTC	2106M	6457M
2026-01-21 06:52:10.804667244 UTC	2107M	6456M
2026-01-21 06:52:11.804566165 UTC	2106M	6456M
2026-01-21 06:52:12.804656403 UTC	2117M	6445M
2026-01-21 06:52:13.804521229 UTC	2116M	6446M
2026-01-21 06:52:14.804829027 UTC	2118M	6444M
2026-01-21 06:52:15.804638955 UTC	2118M	6444M
2026-01-21 06:52:16.804560395 UTC	2118M	6444M
2026-01-21 06:52:17.804532002 UTC	2118M	6444M
2026-01-21 06:52:18.804546244 UTC	2119M	6442M

v0d1ch and others added 7 commits January 15, 2026 10:29

Use StrictData in hydra-node

c347154

This reduces the memory usage significantly (1.7 GB vs. 137 MB for the stress-test I was running) Signed-off-by: Sasha Bogicevic <sasha.bogicevic@iohk.io>

ci: enable Docker builds for pull requests

4f243fa

- Add pull_request trigger for PRs targeting master branch - Tag PR builds as pr-<number> for easy identification - Use PR head SHA as version for traceability

ci: trigger CI and Docker builds for v1.2.0-base branch

7c12876

fix: treefmt

67cdf89

increase mainnet limit

1f5003e

fix: icid tx version race condition

3b3b7b9

awcjack changed the base branch from v1.2.2 to v1.2.0-base January 21, 2026 06:21

awcjack and others added 4 commits January 21, 2026 06:22

trigger ci

ee9db03

fix: stale oversight

0638425

fix: compile error

b89b8e6

fix: ci

75e78ae

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

fix: icid tx version race condition#4

fix: icid tx version race condition#4
HinsonSIDAN wants to merge 11 commits intov1.2.0-basefrom
v1.2.3

HinsonSIDAN commented Jan 21, 2026

Uh oh!

github-actions bot commented Jan 21, 2026

Uh oh!

github-actions bot commented Jan 21, 2026

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

4 participants

Conversation

HinsonSIDAN commented Jan 21, 2026

Uh oh!

github-actions bot commented Jan 21, 2026

Transaction cost differences

Uh oh!

github-actions bot commented Jan 21, 2026

Transaction costs

Script summary

Init transaction costs

Commit transaction costs

CollectCom transaction costs

Cost of Increment Transaction

Cost of Decrement Transaction

Close transaction costs

Contest transaction costs

Abort transaction costs

FanOut transaction costs

End-to-end benchmark results

Baseline Scenario

Memory data

Three local nodes

Memory data

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

4 participants

`Init` transaction costs

`Commit` transaction costs

`CollectCom` transaction costs

`Close` transaction costs

`Contest` transaction costs

`Abort` transaction costs

`FanOut` transaction costs