Add triage for this week

Author: Mark-Simulacrum

triage/2024-10-14.md

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+# 2024-10-14 Triage Log
+
+No major changes this week.
+
+Triage done by **@simulacrum**.
+Revision range: [e6c46db4..5ceb623a](https://perf.rust-lang.org/?start=e6c46db4e9fd11e3183c397a59d946731034ede6&end=5ceb623a4abd66e91e7959d25caaf0523f1a7f7c&absolute=false&stat=instructions%3Au)
+
+**Summary**:
+
+| (instructions:u)                   | mean  | range          | count |
+|:----------------------------------:|:-----:|:--------------:|:-----:|
+| Regressions ❌ <br /> (primary)    | 0.2%  | [0.2%, 0.2%]   | 1     |
+| Regressions ❌ <br /> (secondary)  | 0.5%  | [0.2%, 2.9%]   | 16    |
+| Improvements ✅ <br /> (primary)   | -0.3% | [-0.4%, -0.2%] | 14    |
+| Improvements ✅ <br /> (secondary) | -0.6% | [-1.7%, -0.1%] | 32    |
+| All ❌✅ (primary)                 | -0.2% | [-0.4%, 0.2%]  | 15    |
+
+
+1 Regression, 1 Improvement, 2 Mixed; 2 of them in rollups
+36 artifact comparisons made in total
+
+#### Regressions
+
+Introduce SolverRelating type relation to the new solver [#131263](https://github.com/rust-lang/rust/pull/131263) [(Comparison Link)](https://perf.rust-lang.org/compare.html?start=4cc494bbfe9911d24f3ee521f98d5c6bb7e3ffe8&end=8d94e06ec9758b5c03ea77bb5dab22a1a76bc261&stat=instructions:u)
+
+| (instructions:u)                   | mean | range        | count |
+|:----------------------------------:|:----:|:------------:|:-----:|
+| Regressions ❌ <br /> (primary)    | 0.2% | [0.2%, 0.2%] | 1     |
+| Regressions ❌ <br /> (secondary)  | 0.5% | [0.2%, 2.7%] | 9     |
+| Improvements ✅ <br /> (primary)   | -    | -            | 0     |
+| Improvements ✅ <br /> (secondary) | -    | -            | 0     |
+| All ❌✅ (primary)                 | 0.2% | [0.2%, 0.2%] | 1     |
+
+Genuine, if small, regressions on a number of benchmarks. Likely required as
+part of the broader move to the new solver.
+
+#### Improvements
+
+Rollup of 8 pull requests [#131628](https://github.com/rust-lang/rust/pull/131628) [(Comparison Link)](https://perf.rust-lang.org/compare.html?start=6b9676b45431a1e531b9c5f7bd289fc36a312749&end=ef4e8259b5016d85e261587b605028b2ff06c13d&stat=instructions:u)
+
+| (instructions:u)                   | mean  | range          | count |
+|:----------------------------------:|:-----:|:--------------:|:-----:|
+| Regressions ❌ <br /> (primary)    | -     | -              | 0     |
+| Regressions ❌ <br /> (secondary)  | 0.5%  | [0.3%, 0.6%]   | 2     |
+| Improvements ✅ <br /> (primary)   | -0.3% | [-0.3%, -0.2%] | 8     |
+| Improvements ✅ <br /> (secondary) | -0.6% | [-1.8%, -0.1%] | 31    |
+| All ❌✅ (primary)                 | -0.3% | [-0.3%, -0.2%] | 8     |
+
+Seems most likely to be due to "Shallowly match opaque key in storage
+[#131599](https://github.com/rust-lang/rust/pull/131599)" but not confirming
+since this is an improvement.
+
+#### Mixed
+
+Rollup of 7 pull requests [#131581](https://github.com/rust-lang/rust/pull/131581) [(Comparison Link)](https://perf.rust-lang.org/compare.html?start=fb20e4d3b96d1de459d086980a8b99d5060ad9fe&end=8f8bee4f60d9d3769f75c70d558c27a95761c554&stat=instructions:u)
+
+| (instructions:u)                   | mean  | range          | count |
+|:----------------------------------:|:-----:|:--------------:|:-----:|
+| Regressions ❌ <br /> (primary)    | -     | -              | 0     |
+| Regressions ❌ <br /> (secondary)  | 0.4%  | [0.3%, 0.6%]   | 6     |
+| Improvements ✅ <br /> (primary)   | -0.3% | [-1.0%, -0.2%] | 7     |
+| Improvements ✅ <br /> (secondary) | -2.5% | [-2.5%, -2.5%] | 1     |
+| All ❌✅ (primary)                 | -0.3% | [-1.0%, -0.2%] | 7     |
+
+Possibly spurious (and/or bi-modality) regression confined to tt-muncher
+(though across multiple scenarios). No need for further investigation,
+particular given a rollup.
+
+Add `#[track_caller]` to allocating methods of `Vec` & `VecDeque` [#126557](https://github.com/rust-lang/rust/pull/126557) [(Comparison Link)](https://perf.rust-lang.org/compare.html?start=5ceb623a4abd66e91e7959d25caaf0523f1a7f7c&end=f6648f252a05a0a46c865d7ec836b46290613bf9&stat=instructions:u)
+
+| (instructions:u)                   | mean  | range          | count |
+|:----------------------------------:|:-----:|:--------------:|:-----:|
+| Regressions ❌ <br /> (primary)    | 0.3%  | [0.0%, 0.5%]   | 26    |
+| Regressions ❌ <br /> (secondary)  | -     | -              | 0     |
+| Improvements ✅ <br /> (primary)   | -     | -              | 0     |
+| Improvements ✅ <br /> (secondary) | -0.2% | [-0.2%, -0.1%] | 4     |
+| All ❌✅ (primary)                 | 0.3%  | [0.0%, 0.5%]   | 26    |
+
+Seems to be accepted by T-libs
+(https://github.com/rust-lang/rust/pull/126557#issuecomment-2329482185).
+An expected regression pre-merge.