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Fix Rust benchmarking#223

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wsxrdv merged 3 commits intogoogle:mainfrom
wsxrdv:fix_bench
Aug 25, 2025
Merged

Fix Rust benchmarking#223
wsxrdv merged 3 commits intogoogle:mainfrom
wsxrdv:fix_bench

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@wsxrdv wsxrdv commented Aug 25, 2025

Pull request #171 introduced a problem with benchmarking code rendering it useless. This commit traverses the dataset directory recursively and thus again introduces meaningful benchmarking. Also it makes sure that we traverse the expected number of shards.

This commit includes also test and holdout splits to benchmarking since when we have that data we might use it. This will introduce a regression compared to the first benchmarks and definitely one compared to the empty benchmarks.

Pull request google#171 introduced a
problem with benchmarking code rendering it useless. This commit
traverses the dataset directory recursively and thus again introducec
meaningful benchmarking. Also it makes sure that we traverse the
expected number of shards.

This commit includes also test and holdout since when we have that data
we might use it. This will introduce a regression compared to the first
benchmarks and definitely one compared to the empty benchmarks.
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Summary of Changes

Hello @wsxrdv, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses a critical issue in the Rust benchmarking setup, which was previously rendered ineffective due to an incorrect dataset traversal mechanism. It re-enables meaningful benchmarking by implementing recursive directory traversal for dataset files and ensures that all expected data shards, including test and holdout splits, are correctly processed. This change aims to provide a more comprehensive and accurate representation of performance, though it may lead to a regression in benchmark results compared to previous, less complete runs.

Highlights

  • Benchmarking Fix: Rectified a broken Rust benchmarking setup by enabling recursive traversal of dataset directories, ensuring all relevant data files are included.
  • Comprehensive Data Inclusion: Expanded benchmarking scope to include test and holdout data splits, providing a more complete performance evaluation.
  • Shard Count Verification: Introduced an assertion to confirm that the correct and expected number of data shards are processed during benchmarking.
  • Dependency Management: Added the glob crate to facilitate recursive file system pattern matching for dataset discovery.
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Code Review

This pull request addresses a significant issue in the Rust benchmarking setup. By replacing the non-recursive directory traversal with a recursive glob pattern, it ensures all relevant data shards (including test and holdout splits) are included in the benchmark, making the results meaningful again. The addition of the glob dependency is appropriate for this change. The code is well-written, and I have one minor suggestion to improve the new assertion for better debuggability and maintainability.

Comment thread rust/benches/my_benchmark.rs Outdated
wsxrdv and others added 2 commits August 25, 2025 15:47
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
@wsxrdv wsxrdv requested a review from ia0 August 25, 2025 15:51
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coveralls commented Aug 25, 2025

Pull Request Test Coverage Report for Build 17214041473

Details

  • 0 of 0 changed or added relevant lines in 0 files are covered.
  • No unchanged relevant lines lost coverage.
  • Overall coverage remained the same at 87.556%

Totals Coverage Status
Change from base Build 17199628909: 0.0%
Covered Lines: 2533
Relevant Lines: 2893

💛 - Coveralls

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🐰 Bencher Report

Branchfix_bench
Testbedubuntu-latest

⚠️ WARNING: No Threshold found!

Without a Threshold, no Alerts will ever be generated.

Click here to create a new Threshold
For more information, see the Threshold documentation.
To only post results if a Threshold exists, set the --ci-only-thresholds flag.

Click to view all benchmark results
BenchmarkLatencymilliseconds (ms)
ExampleIterator📈 view plot
⚠️ NO THRESHOLD
234.23 ms
parallel_map📈 view plot
⚠️ NO THRESHOLD
243.13 ms
🐰 View full continuous benchmarking report in Bencher

@wsxrdv wsxrdv requested a review from kaczmarczyck August 25, 2025 15:52
@wsxrdv wsxrdv enabled auto-merge August 25, 2025 16:02
@wsxrdv wsxrdv added this pull request to the merge queue Aug 25, 2025
Merged via the queue into google:main with commit d8f7202 Aug 25, 2025
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3 participants