Prefilter VCS permalink lines

[j178]

❯ hyperfine --warmup 5 --runs 30  "prek run check-vcs-permalinks --all-files" "./target/profiling/prek run check-vcs-permalinks --all-files" -i                                                                                                                                                                           
Benchmark 1: prek run check-vcs-permalinks --all-files
  Time (mean ± σ):     107.5 ms ±   8.3 ms    [User: 81.3 ms, System: 29.2 ms]
  Range (min … max):    97.6 ms … 134.6 ms    30 runs
 
  Warning: Ignoring non-zero exit code.
 
Benchmark 2: ./target/profiling/prek run check-vcs-permalinks --all-files
  Time (mean ± σ):      39.3 ms ±   1.1 ms    [User: 20.4 ms, System: 27.5 ms]
  Range (min … max):    36.9 ms …  41.8 ms    30 runs
 
  Warning: Ignoring non-zero exit code.
 
Summary
  ./target/profiling/prek run check-vcs-permalinks --all-files ran
    2.74 ± 0.23 times faster than prek run check-vcs-permalinks --all-files

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.75%. Comparing base (a77fdad) to head (ebf4456).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2253      +/-   ##
==========================================
+ Coverage   92.73%   92.75%   +0.01%     
==========================================
  Files         127      127              
  Lines       27486    27518      +32     
==========================================
+ Hits        25489    25523      +34     
+ Misses       1997     1995       -2     

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[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 4e64c23d35

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[prek-ci-bot]

📦 Cargo Bloat Comparison

Binary size change: +1.12% (26.7 MiB → 27.0 MiB)

Expand for cargo-bloat output

Head Branch Results

 File  .text     Size             Crate Name
 1.2%   2.5% 332.0KiB        aws_lc_sys aws_lc_0_41_0_aes_gcm_encrypt_avx512
 1.2%   2.5% 332.0KiB        aws_lc_sys aws_lc_0_41_0_aes_gcm_decrypt_avx512
 0.4%   0.7% 101.0KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.7%  96.0KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.7%  92.0KiB              prek prek::languages::<impl prek::config::Language>::install::{{closure}}
 0.2%   0.5%  64.9KiB             prek? <prek::cli::Command as clap_builder::derive::Subcommand>::augment_subcommands
 0.2%   0.4%  49.8KiB              prek prek::run::{{closure}}
 0.2%   0.4%  49.4KiB annotate_snippets annotate_snippets::renderer::render::render
 0.2%   0.3%  44.4KiB             prek? <prek::config::_::<impl serde_core::de::Deserialize for prek::config::Config>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map
 0.2%   0.3%  43.7KiB              prek prek::cli::run::run::run::{{closure}}
 0.1%   0.3%  35.3KiB              prek prek::hooks::meta_hooks::check_hooks_apply::{{closure}}
 0.1%   0.3%  34.5KiB               std core::ptr::drop_in_place<prek::languages::<impl prek::config::Language>::install::{{closure}}>
 0.1%   0.2%  32.8KiB              prek prek::archive::unpack::{{closure}}
 0.1%   0.2%  31.8KiB             prek? <prek::cli::RunOptions as clap_builder::derive::Args>::augment_args
 0.1%   0.2%  29.8KiB     granit_parser granit_parser::scanner::Scanner<T>::fetch_more_tokens
 0.1%   0.2%  28.0KiB        aws_lc_sys aws_lc_0_41_0_edwards25519_scalarmuldouble_alt
 0.1%   0.2%  27.5KiB        aws_lc_sys aws_lc_0_41_0_edwards25519_scalarmuldouble
 0.1%   0.2%  27.2KiB             prek? <prek::config::_::<impl serde_core::de::Deserialize for prek::config::RemoteHook>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map
 0.1%   0.2%  26.1KiB              prek prek::cli::try_repo::try_repo::{{closure}}
 0.1%   0.2%  25.1KiB              prek prek::languages::ruby::installer::RubyInstaller::install::{{closure}}
42.1%  86.1%  11.4MiB                   And 24886 smaller methods. Use -n N to show more.
48.8% 100.0%  13.2MiB                   .text section size, the file size is 27.0MiB

Base Branch Results

 File  .text     Size             Crate Name
 1.2%   2.5% 332.0KiB        aws_lc_sys aws_lc_0_41_0_aes_gcm_encrypt_avx512
 1.2%   2.5% 332.0KiB        aws_lc_sys aws_lc_0_41_0_aes_gcm_decrypt_avx512
 0.4%   0.7%  96.1KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.7%  92.2KiB              prek prek::languages::<impl prek::config::Language>::run::{{closure}}::{{closure}}
 0.3%   0.7%  92.0KiB              prek prek::languages::<impl prek::config::Language>::install::{{closure}}
 0.2%   0.5%  64.7KiB             prek? <prek::cli::Command as clap_builder::derive::Subcommand>::augment_subcommands
 0.2%   0.4%  49.8KiB              prek prek::run::{{closure}}
 0.2%   0.4%  49.4KiB annotate_snippets annotate_snippets::renderer::render::render
 0.2%   0.3%  44.8KiB             prek? <prek::config::_::<impl serde_core::de::Deserialize for prek::config::Config>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map
 0.2%   0.3%  44.1KiB              prek prek::cli::run::run::run::{{closure}}
 0.1%   0.3%  34.3KiB               std core::ptr::drop_in_place<prek::languages::<impl prek::config::Language>::install::{{closure}}>
 0.1%   0.2%  32.8KiB              prek prek::archive::unpack::{{closure}}
 0.1%   0.2%  31.1KiB             prek? <prek::cli::RunOptions as clap_builder::derive::Args>::augment_args
 0.1%   0.2%  29.8KiB     granit_parser granit_parser::scanner::Scanner<T>::fetch_more_tokens
 0.1%   0.2%  28.0KiB        aws_lc_sys aws_lc_0_41_0_edwards25519_scalarmuldouble_alt
 0.1%   0.2%  27.5KiB        aws_lc_sys aws_lc_0_41_0_edwards25519_scalarmuldouble
 0.1%   0.2%  27.2KiB             prek? <prek::config::_::<impl serde_core::de::Deserialize for prek::config::RemoteHook>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map
 0.1%   0.2%  26.1KiB              prek prek::cli::try_repo::try_repo::{{closure}}
 0.1%   0.2%  25.1KiB              prek prek::languages::ruby::installer::RubyInstaller::install::{{closure}}
 0.1%   0.2%  24.0KiB             prek? <prek::config::_::<impl serde_core::de::Deserialize for prek::config::LocalHook>::deserialize::__Visitor as serde_core::de::Visitor>::visit_map
42.0%  86.1%  11.2MiB                   And 24551 smaller methods. Use -n N to show more.
48.7% 100.0%  13.0MiB                   .text section size, the file size is 26.7MiB

[prek-ci-bot]

⚡️ Hyperfine Benchmarks

Summary: 0 regressions, 0 improvements above the 10% threshold.

Environment

• OS: Linux 6.17.0-1018-azure
• CPU: 4 cores
• prek version: prek 0.4.5+26 (ead4265 2026-06-26)
• Rust version: rustc 1.96.0 (ac68faa20 2026-05-25)
• Hyperfine version: hyperfine 1.20.0

CLI Commands

Benchmarking basic commands in the main repo:

prek --version

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base --version	2.2 ± 0.2	2.0	3.7	1.04 ± 0.12
prek-head --version	2.1 ± 0.1	2.0	3.0	1.00

prek list

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base list	9.2 ± 3.1	8.6	40.2	1.01 ± 0.38
prek-head list	9.1 ± 1.4	8.6	22.8	1.00

prek validate-config .pre-commit-config.yaml

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base validate-config .pre-commit-config.yaml	3.0 ± 0.1	2.8	3.4	1.01 ± 0.05
prek-head validate-config .pre-commit-config.yaml	2.9 ± 0.1	2.8	3.1	1.00

prek sample-config

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base sample-config	2.4 ± 0.0	2.3	2.5	1.00
prek-head sample-config	2.4 ± 0.0	2.3	2.5	1.01 ± 0.03

Cold vs Warm Runs

Comparing first run (cold) vs subsequent runs (warm cache):

prek run --all-files (cold - no cache)

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run --all-files	72.0 ± 2.6	69.6	76.7	1.00
prek-head run --all-files	72.6 ± 2.2	70.0	75.8	1.01 ± 0.05

prek run --all-files (warm - with cache)

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run --all-files	72.8 ± 2.4	68.1	76.5	1.00
prek-head run --all-files	73.3 ± 2.7	68.0	77.1	1.01 ± 0.05

Full Hook Suite

Running the builtin hook suite on the benchmark workspace:

prek run --all-files (full builtin hook suite)

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run --all-files	73.2 ± 2.5	68.2	79.5	1.00 ± 0.05
prek-head run --all-files	73.1 ± 2.6	68.5	79.0	1.00

Individual Hook Performance

Benchmarking each hook individually on the test repo:

prek run trailing-whitespace --all-files

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run trailing-whitespace --all-files	19.3 ± 0.4	18.9	20.4	1.00 ± 0.03
prek-head run trailing-whitespace --all-files	19.3 ± 0.4	18.6	19.9	1.00

prek run end-of-file-fixer --all-files

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run end-of-file-fixer --all-files	24.5 ± 1.3	23.2	28.8	1.00
prek-head run end-of-file-fixer --all-files	25.3 ± 1.5	23.4	29.4	1.03 ± 0.08

prek run check-json --all-files

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run check-json --all-files	7.4 ± 0.3	7.0	8.1	1.01 ± 0.05
prek-head run check-json --all-files	7.4 ± 0.3	7.0	8.0	1.00

prek run check-yaml --all-files

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run check-yaml --all-files	7.2 ± 0.1	6.9	7.4	1.00 ± 0.03
prek-head run check-yaml --all-files	7.1 ± 0.1	6.9	7.5	1.00

prek run check-toml --all-files

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run check-toml --all-files	7.5 ± 0.3	6.8	8.4	1.02 ± 0.06
prek-head run check-toml --all-files	7.3 ± 0.3	7.0	8.1	1.00

prek run check-xml --all-files

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run check-xml --all-files	7.3 ± 0.2	6.9	7.7	1.00
prek-head run check-xml --all-files	7.4 ± 0.3	6.8	7.8	1.01 ± 0.05

prek run detect-private-key --all-files

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run detect-private-key --all-files	12.9 ± 1.1	11.4	15.7	1.00
prek-head run detect-private-key --all-files	13.0 ± 1.0	11.3	14.9	1.01 ± 0.12

prek run fix-byte-order-marker --all-files

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run fix-byte-order-marker --all-files	17.3 ± 0.8	16.1	18.9	1.00
prek-head run fix-byte-order-marker --all-files	17.4 ± 0.8	16.4	19.3	1.01 ± 0.06

Installation Performance

Benchmarking hook installation (fast path hooks skip Python setup):

prek install-hooks (cold - no cache)

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base install-hooks	4.3 ± 0.1	4.2	4.4	1.02 ± 0.03
prek-head install-hooks	4.2 ± 0.1	4.1	4.3	1.00

prek install-hooks (warm - with cache)

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base install-hooks	4.3 ± 0.1	4.2	4.3	1.00
prek-head install-hooks	4.4 ± 0.1	4.3	4.4	1.02 ± 0.02

File Filtering/Scoping Performance

Testing different file selection modes:

prek run (staged files only)

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run	37.5 ± 1.4	35.2	41.0	1.01 ± 0.05
prek-head run	37.0 ± 1.1	35.3	39.6	1.00

prek run --files '*.json' (specific file type)

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run --files '*.json'	7.7 ± 0.1	7.5	7.9	1.00
prek-head run --files '*.json'	8.0 ± 0.2	7.7	8.3	1.04 ± 0.02

Workspace Discovery & Initialization

Benchmarking hook discovery and initialization overhead:

prek run --dry-run --all-files (measures init overhead)

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run --dry-run --all-files	6.5 ± 0.1	6.4	6.6	1.00 ± 0.01
prek-head run --dry-run --all-files	6.5 ± 0.1	6.4	6.7	1.00

Meta Hooks Performance

Benchmarking meta hooks separately:

prek run check-hooks-apply --all-files

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run check-hooks-apply --all-files	11.2 ± 0.6	10.0	11.8	1.10 ± 0.06
prek-head run check-hooks-apply --all-files	10.2 ± 0.1	10.0	10.4	1.00

prek run check-useless-excludes --all-files

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run check-useless-excludes --all-files	10.1 ± 0.1	10.0	10.3	1.00
prek-head run check-useless-excludes --all-files	10.2 ± 0.1	10.0	10.6	1.01 ± 0.02

prek run identity --all-files

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
prek-base run identity --all-files	9.4 ± 0.1	9.3	9.5	1.00
prek-head run identity --all-files	9.6 ± 0.1	9.4	9.8	1.01 ± 0.01