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<code>-Zthreads</code> is slower the more cores I add

S-needs-reproStatus: This issue has no reproduction and needs a reproduction to make progress.Status: This issue has no reproduction and needs a reproduction to make progress.

WG-compiler-performanceWorking group: Compiler PerformanceWorking group: Compiler Performance

Status: Open.

#129236 In rust-lang/rust;

· oriongonza opened on Aug 18, 2024

opt-dist: separate dist-build from profiling

C-discussionCategory: Discussion or questions that doesn't represent real issues.Category: Discussion or questions that doesn't represent real issues.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

T-infraRelevant to the infrastructure team, which will review and decide on the PR/issue.Relevant to the infrastructure team, which will review and decide on the PR/issue.

WG-compiler-performanceWorking group: Compiler PerformanceWorking group: Compiler Performance

Status: Open.

#127259 In rust-lang/rust;

· weihanglo opened on Jul 3, 2024

Performance regression in 1.72 related to normalization of opaques with late-bound vars

C-bugCategory: This is a bug.Category: This is a bug.

I-compiletimeIssue: Problems and improvements with respect to compile times.Issue: Problems and improvements with respect to compile times.

P-mediumMedium priorityMedium priority

regression-from-stable-to-stablePerformance or correctness regression from one stable version to another.Performance or correctness regression from one stable version to another.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

WG-compiler-performanceWorking group: Compiler PerformanceWorking group: Compiler Performance

Status: Open.

#115283 In rust-lang/rust;

· kornelski opened on Aug 27, 2023

Tracking issue for speeding up rustc via its build configuration

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

WG-compiler-performanceWorking group: Compiler PerformanceWorking group: Compiler Performance

Status: Open.

#103595 In rust-lang/rust;

· nnethercote opened on Oct 26, 2022

Performance regression with niche optimization

C-optimizationCategory: An issue highlighting optimization opportunities or PRs implementing suchCategory: An issue highlighting optimization opportunities or PRs implementing such

I-compiletimeIssue: Problems and improvements with respect to compile times.Issue: Problems and improvements with respect to compile times.

P-mediumMedium priorityMedium priority

regression-untriagedUntriaged performance or correctness regression.Untriaged performance or correctness regression.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

WG-compiler-performanceWorking group: Compiler PerformanceWorking group: Compiler Performance

Status: Open.

#101872 In rust-lang/rust;

· mikebenfield opened on Sep 15, 2022

-Zpanic-in-drop=abort for rustc + tools

C-optimizationCategory: An issue highlighting optimization opportunities or PRs implementing suchCategory: An issue highlighting optimization opportunities or PRs implementing such

I-compiletimeIssue: Problems and improvements with respect to compile times.Issue: Problems and improvements with respect to compile times.

WG-compiler-performanceWorking group: Compiler PerformanceWorking group: Compiler Performance

Status: Open.

#89269 In rust-lang/rust;

· Mark-Simulacrum opened on Sep 26, 2021

Add more artifact size profiling

A-self-profileArea: Self-profiling feature of the compilerArea: Self-profiling feature of the compiler

WG-compiler-performanceWorking group: Compiler PerformanceWorking group: Compiler Performance

Status: Open.

#87405 In rust-lang/rust;

· rylev opened on Jul 23, 2021

Track memory usage with -Z self-profile

A-self-profileArea: Self-profiling feature of the compilerArea: Self-profiling feature of the compiler

C-optimizationCategory: An issue highlighting optimization opportunities or PRs implementing suchCategory: An issue highlighting optimization opportunities or PRs implementing such

I-compilememIssue: Problems and improvements with respect to memory usage during compilation.Issue: Problems and improvements with respect to memory usage during compilation.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

WG-compiler-performanceWorking group: Compiler PerformanceWorking group: Compiler Performance

Status: Open.

#81348 In rust-lang/rust;

· jyn514 opened on Jan 24, 2021

Rustc takes 3.5 GB RSS to check <code>vtparse</code>

A-borrow-checkerArea: The borrow checkerArea: The borrow checker

C-bugCategory: This is a bug.Category: This is a bug.

I-compilememIssue: Problems and improvements with respect to memory usage during compilation.Issue: Problems and improvements with respect to memory usage during compilation.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

WG-compiler-performanceWorking group: Compiler PerformanceWorking group: Compiler Performance

Status: Open.

#81124 In rust-lang/rust;

· jyn514 opened on Jan 17, 2021

Exploring PGO for the Rust compiler

A-reproducibilityArea: Reproducible / deterministic buildsArea: Reproducible / deterministic builds

C-discussionCategory: Discussion or questions that doesn't represent real issues.Category: Discussion or questions that doesn't represent real issues.

I-compiletimeIssue: Problems and improvements with respect to compile times.Issue: Problems and improvements with respect to compile times.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

T-infraRelevant to the infrastructure team, which will review and decide on the PR/issue.Relevant to the infrastructure team, which will review and decide on the PR/issue.

T-releaseRelevant to the release subteam, which will review and decide on the PR/issue.Relevant to the release subteam, which will review and decide on the PR/issue.

WG-compiler-performanceWorking group: Compiler PerformanceWorking group: Compiler Performance

Status: Open.

#79442 In rust-lang/rust;

· michaelwoerister opened on Nov 26, 2020

Audit sources of shared state across rustc

A-parallel-compilerArea: parallel compilerArea: parallel compiler

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

WG-compiler-performanceWorking group: Compiler PerformanceWorking group: Compiler Performance

Status: Open.

#63643 In rust-lang/rust;

· aturon opened on Aug 16, 2019

Tracking Issue for making incremental compilation the default for Release Builds

A-incr-compArea: Incremental compilationArea: Incremental compilation

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

I-compiletimeIssue: Problems and improvements with respect to compile times.Issue: Problems and improvements with respect to compile times.

S-tracking-design-concernsStatus: There are blocking design concerns.Status: There are blocking design concerns.

T-cargoRelevant to the cargo team, which will review and decide on the PR/issue.Relevant to the cargo team, which will review and decide on the PR/issue.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

WG-compiler-performanceWorking group: Compiler PerformanceWorking group: Compiler Performance

Status: Open.

#57968 In rust-lang/rust;

· michaelwoerister opened on Jan 29, 2019