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[do not merge] ARM perf experiments - #161992

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[do not merge] ARM perf experiments#161992
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@Kobzol Kobzol commented Aug 29, 2026

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Opening for experiments with rustc-perf ARM benchmarks.

@rustbot rustbot added A-meta Area: Issues & PRs about the rust-lang/rust repository itself S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Aug 29, 2026
@Kobzol

Kobzol commented Aug 31, 2026

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@bors try jobs=dist-x86_64-linux,dist-aarch64-linux @rust-timer queue targets=x86_64-unknown-linux-gnu,aarch64-unknown-linux-gnu

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@rustbot rustbot added the S-waiting-on-perf Status: Waiting on a perf run to be completed. label Aug 31, 2026
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rust-bors Bot pushed a commit that referenced this pull request Aug 31, 2026
[do not merge] ARM perf experiments


try-job: dist-x86_64-linux
try-job: dist-aarch64-linux
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rust-bors Bot commented Aug 31, 2026

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☀️ Try build successful (CI)
Build commit: 79c478e (79c478e64ba9aaedcac8bda2dbbdd1a5cac6bb2a)
Base parent: be4b6a9 (be4b6a99a3c605d27786c7d48772fec5bd2df76c)

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Finished benchmarking commit (79c478e): comparison URL.

Overall result: no relevant changes - no action needed

Benchmarking means the PR may be perf-sensitive. Consider adding rollup=never if this change is not fit for rolling up.

@rustbot label: -S-waiting-on-perf -perf-regression

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

Results (secondary 6.9%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

mean range count
Regressions ❌
(primary)
- - 0
Regressions ❌
(secondary)
6.9% [6.9%, 6.9%] 1
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
- - 0
All ❌✅ (primary) - - 0

Cycles

Results (primary -2.5%, secondary -1.4%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

mean range count
Regressions ❌
(primary)
- - 0
Regressions ❌
(secondary)
- - 0
Improvements ✅
(primary)
-2.5% [-2.5%, -2.5%] 1
Improvements ✅
(secondary)
-1.4% [-1.4%, -1.4%] 1
All ❌✅ (primary) -2.5% [-2.5%, -2.5%] 1

Binary size

This perf run didn't have relevant results for this metric.

Bootstrap: 474.007s -> 474.887s (0.19%)
Artifact size: 307.41 MiB -> 402.65 MiB (30.98%)

@rustbot rustbot removed the S-waiting-on-perf Status: Waiting on a perf run to be completed. label Aug 31, 2026
@Kobzol

Kobzol commented Sep 1, 2026

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@bors try jobs=dist-x86_64-linux,dist-aarch64-linux @rust-timer queue targets=x86_64-unknown-linux-gnu,aarch64-unknown-linux-gnu

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@rustbot rustbot added the S-waiting-on-perf Status: Waiting on a perf run to be completed. label Sep 1, 2026
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rust-bors Bot pushed a commit that referenced this pull request Sep 1, 2026
[do not merge] ARM perf experiments


try-job: dist-x86_64-linux
try-job: dist-aarch64-linux
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☀️ Try build successful (CI)
Build commit: fc8f8d2 (fc8f8d21edb3038ec91bf441fba88e9293b1faf6)
Base parent: a433023 (a4330234a776684c36428d001721d0320d24dd77)

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Finished benchmarking commit (fc8f8d2): comparison URL.

Overall result: no relevant changes - no action needed

Benchmarking means the PR may be perf-sensitive. Consider adding rollup=never if this change is not fit for rolling up.

@rustbot label: -S-waiting-on-perf -perf-regression

Instruction count

This perf run didn't have relevant results for this metric.

Max RSS (memory usage)

This perf run didn't have relevant results for this metric.

Cycles

Results (primary 2.0%, secondary 5.0%)

A less reliable metric. May be of interest, but not used to determine the overall result above.

mean range count
Regressions ❌
(primary)
2.0% [2.0%, 2.0%] 1
Regressions ❌
(secondary)
5.0% [2.5%, 7.1%] 8
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
- - 0
All ❌✅ (primary) 2.0% [2.0%, 2.0%] 1

Binary size

This perf run didn't have relevant results for this metric.

Bootstrap: 473.301s -> 478.806s (1.16%)
Artifact size: 400.69 MiB -> 401.38 MiB (0.17%)

@rustbot rustbot removed the S-waiting-on-perf Status: Waiting on a perf run to be completed. label Sep 1, 2026
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