[renovate]

This PR contains the following updates:

Package	Type	Update	Change
divan (source)	dev-dependencies	major	5.0.3 → 6.0.0

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Release Notes

CodSpeedHQ/codspeed-rust (divan)

v6.0.0

Compare Source

CodSpeed for Rust 6.0.0 removes a source of measurement noise from your CPU Simulation benchmarks, so you can spend less time investigating unexpected changes in unrelated results.

Highlights

Your Divan and Criterion benchmarks now run in separate processes. Changes to one benchmark no longer carry allocator state into the benchmarks that follow it, improving consistency as your benchmark suite evolves.

Early results showed lower run-to-run variance, with roughly 70% fewer benchmarks varying by more than 1%.
No benchmark code changes required. Your WallTime results are unaffected.

Breaking Changes

• Some benchmark values may shift when you upgrade
• Each benchmark adds small process startup overhead to the run

Set CODSPEED_PROCESS_ISOLATION=false to revert to the previous behavior.

What's Changed

• fix(criterion): avoid duplicate setup in simulation iter_batched by @​not-matthias in #​198
• feat(divan): run each benchmark in its own process by @​not-matthias in #​194
• feat(codspeed): declare a Symposium plugin by @​adriencaccia in #​200

Full Changelog: CodSpeedHQ/codspeed-rust@v5.0.3...v6.0.0

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[codspeed]

Merging this PR will regress 4 benchmarks

3 warnings

⚠️ 5 benchmarks are dominated by system calls

System calls cannot be simulated consistently and are left out of the measure. The reported value understates the real cost. Switch to the Walltime instrument to measure them.

Learn more about system calls

See affected benchmarks

⚠️ 14 benchmarks with a significant change ran on different hardware

Their base and head results were measured on machines with a different CPU, core count or memory, so the changes might not come from the code. Run base and head on the same runner type.

Learn more about Macro Runners

See affected benchmarks

⚠️ 14 benchmarks with a significant change ran on a different major version of their CodSpeed integration

Their head results were measured with codspeed-rust 6.0.0, a different major version than their base results. A major version can change how benchmarks are measured, so the changes might come from this version difference rather than from the code. Comparisons between runs on the same major version are not affected.

See affected benchmarks

⚡ 10 improved benchmarks
❌ 4 regressed benchmarks
✅ 69 untouched benchmarks

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
❌	quote_short_ids[10]	71.3 µs	120.5 µs	-40.8%
❌	quote_short_ids[1000]	5.2 ms	6.5 ms	-20.46%
❌	crypto_encrypt[4096]	96.6 µs	109.6 µs	-11.86%
❌	subscription_percent_decode[1000]	13 µs	14.7 µs	-11.81%
⚡	merge_strip_secret[10]	8.8 µs	7.3 µs	+20.94%
⚡	merge_strip_secret[1000]	8.9 µs	7.4 µs	+19.96%
⚡	merge_strip_secret[100]	8.9 µs	7.4 µs	+19.69%
⚡	parse_config_yaml[10]	1.5 ms	1.3 ms	+15.83%
⚡	decode_base64_subscription[10]	1.6 ms	1.4 ms	+15.49%
⚡	merge_yaml_patch	15.4 µs	13.4 µs	+15.08%
⚡	smart_score[10]	30.3 µs	26.4 µs	+14.89%
⚡	prism_normalize[10000]	15.4 ms	13.5 ms	+14.38%
⚡	tun_update[10]	2 ms	1.8 ms	+12.13%
⚡	tun_inject_fd[10]	2 ms	1.8 ms	+10.95%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing renovate/divan-6.x (a68d48f) with main (60dbc7d)}

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud