28680877405
93%

Ran 03 Jul 2026 08:15PM UTC

Jobs 11

Files 1766

Run time 3min

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Committed 03 Jul 2026 07:56PM UTC coverage: 92.831% (+0.001%) from 92.83%

Build # 28680877405

Build Type

push

github

Committed by

web-flow

Commit Message

Significantly reduce engine coroutine memory overhead  (#23481)

Easy wins that reduces peak engine memory by _a lot_. I've left comments
at each site, as the choices may be non-obvious.

```console
RUSTC_BOOTSTRAP=1 RUSTFLAGS=-Zprint-type-sizes cargo build -p engine 2>/dev/null | grep -m1 'type: `{async block@engine/src/nodes/mod.rs:5'
```
gives

Before (main):
```console
print-type-size type: `{async block@engine/src/nodes/mod.rs:518:24: 518:34}`: 15744 bytes, alignment: 8 bytes
```
After:
```console
print-type-size type: `{async block@engine/src/nodes/mod.rs:520:24: 520:34}`: 2984 bytes, alignment: 8 bytes
```

Reduces peak memory on a real codebase from 7GB to 3.5GB, attributed to
the fact that some rules run `concurently` on all targets
(`FirstPartyPythonModuleMapping`).

Coverage Stats

93796 of 101040 relevant lines covered (92.83%)

3.7 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
1	test_python_linux_x86_64_7/10 - 28680877405.1	03 Jul 2026 08:23PM UTC	1212	50.77	GitHub Action Run
2	test_python_linux_x86_64_6/10 - 28680877405.2	03 Jul 2026 08:18PM UTC	1202	49.27	GitHub Action Run
3	test_python_linux_x86_64_4/10 - 28680877405.3	03 Jul 2026 08:24PM UTC	1241	58.89	GitHub Action Run
4	test_python_linux_x86_64_3/10 - 28680877405.4	03 Jul 2026 08:22PM UTC	1209	53.57	GitHub Action Run
5	test_python_linux_x86_64_1/10 - 28680877405.5	03 Jul 2026 08:20PM UTC	1207	48.8	GitHub Action Run
6	test_python_linux_x86_64_2/10 - 28680877405.6	03 Jul 2026 08:18PM UTC	1211	58.58	GitHub Action Run
7	test_python_linux_x86_64_5/10 - 28680877405.7	03 Jul 2026 08:18PM UTC	1224	59.93	GitHub Action Run
8	test_python_linux_arm64 - 28680877405.8	03 Jul 2026 08:15PM UTC	1190	51.76	GitHub Action Run
9	test_python_linux_x86_64_0/10 - 28680877405.9	03 Jul 2026 08:21PM UTC	1231	57.29	GitHub Action Run
10	test_python_linux_x86_64_8/10 - 28680877405.10	03 Jul 2026 08:22PM UTC	1210	52.78	GitHub Action Run
11	test_python_linux_x86_64_9/10 - 28680877405.11	03 Jul 2026 08:20PM UTC	1218	53.78	GitHub Action Run

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