please provide benchmark with hyperfine gnu

GNU testsuite comparison:

Skipping an intermittent issue tests/misc/tee (passes in this run but fails in the 'main' branch)

CodSpeed Performance Report

Merging #9195 will degrade performances by 3.25%

_{Comparing quantum-encoding:du-parallel-optimization (16bb63b) with main (859a1ed)}

Summary

⚡ 1 improvement
❌ 1 regression
✅ 124 untouched
⏩ 2 skipped¹

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

GNU testsuite comparison:

Skipping an intermittent issue tests/misc/tee (passes in this run but fails in the 'main' branch)

[founder@quantum-encoding-ltd coreutils]$ unset LD_PRELOAD
[founder@quantum-encoding-ltd coreutils]$ ./run_full_benchmark.sh
=== SYSTEM INFO ===
Date: Sat Nov 8 09:05:03 PM CET 2025
CPU: 11th Gen Intel(R) Core(TM) i7-11800H @ 2.30GHz
Threads: 16
OS: 6.17.5-arch1-1

=== BUILD ===
[libwarden.so] 🛡️ Guardian Shield V7.2 - Scanning background process...
Finished release profile [optimized] target(s) in 0.08s

=== BENCHMARK 1: random stuff (219 GB, 172K dirs, 1.17M files) ===
Benchmark 1: du -sh /home/founder/storage_transfer
Time (mean ± σ): 2.397 s ± 0.015 s [User: 0.269 s, System: 2.124 s]
Range (min … max): 2.379 s … 2.420 s 5 runs

Benchmark 2: ./target/release/du -sh /home/founder/storage_transfer
Time (mean ± σ): 3.348 s ± 0.027 s [User: 0.768 s, System: 2.786 s]
Range (min … max): 3.325 s … 3.395 s 5 runs

Summary
du -sh /home/founder/storage_transfer ran
1.40 ± 0.01 times faster than ./target/release/du -sh /home/founder/storage_transfer

=== BENCHMARK 2: /usr ===
Benchmark 1: sudo du -sh /usr
Time (mean ± σ): 1.702 s ± 0.173 s [User: 0.141 s, System: 0.224 s]
Range (min … max): 1.537 s … 1.979 s 5 runs

Benchmark 2: sudo ./target/release/du -sh /usr
Time (mean ± σ): 2.099 s ± 0.262 s [User: 0.147 s, System: 0.229 s]
Range (min … max): 1.889 s … 2.410 s 5 runs

Warning: The first benchmarking run for this command was significantly slower than the rest (2.361 s). This could be caused by (filesystem) caches that were not filled until after the first run. You are already using the '--warmup' option which helps to fill these caches before the actual benchmark. You can either try to increase the warmup count further or re-run this benchmark on a quiet system in case it was a random outlier. Alternatively, consider using the '--prepare' option to clear the caches before each timing run.

Summary
sudo du -sh /usr ran
1.23 ± 0.20 times faster than sudo ./target/release/du -sh /usr

=== BENCHMARK 3: /usr/lib ===
Benchmark 1: sudo du -sh /usr/lib
Time (mean ± σ): 1.194 s ± 0.090 s [User: 0.143 s, System: 0.217 s]
Range (min … max): 1.095 s … 1.313 s 5 runs

Benchmark 2: sudo ./target/release/du -sh /usr/lib
Time (mean ± σ): 1.187 s ± 0.137 s [User: 0.147 s, System: 0.221 s]
Range (min … max): 1.052 s … 1.402 s 5 runs

Summary
sudo ./target/release/du -sh /usr/lib ran
1.01 ± 0.14 times faster than sudo du -sh /usr/lib

=== BENCHMARK 4: /usr/share ===
Benchmark 1: sudo du -sh /usr/share
Time (mean ± σ): 1.344 s ± 0.162 s [User: 0.145 s, System: 0.220 s]
Range (min … max): 1.144 s … 1.560 s 5 runs

Benchmark 2: sudo ./target/release/du -sh /usr/share
Time (mean ± σ): 1.409 s ± 0.184 s [User: 0.147 s, System: 0.221 s]
Range (min … max): 1.198 s … 1.643 s 5 runs

Summary
sudo du -sh /usr/share ran
1.05 ± 0.19 times faster than sudo ./target/release/du -sh /usr/share

=== BENCHMARK 5: /var ===
Benchmark 1: sudo du -sh /var
Time (mean ± σ): 973.0 ms ± 194.7 ms [User: 145.0 ms, System: 205.6 ms]
Range (min … max): 660.8 ms … 1179.2 ms 5 runs

Benchmark 2: sudo ./target/release/du -sh /var
Time (mean ± σ): 767.2 ms ± 115.4 ms [User: 148.9 ms, System: 201.8 ms]
Range (min … max): 664.1 ms … 944.7 ms 5 runs

Summary
sudo ./target/release/du -sh /var ran
1.27 ± 0.32 times faster than sudo du -sh /var

[founder@quantum-encoding-ltd coreutils]$ ./benchmark_multi_dirs.sh
=== MULTI-DIRECTORY BENCHMARK ===

[1/3] Benchmarking /usr/lib
Benchmark 1: sudo du -sh /usr/lib
Time (mean ± σ): 1.273 s ± 0.099 s [User: 0.150 s, System: 0.209 s]
Range (min … max): 1.196 s … 1.436 s 5 runs

Benchmark 2: sudo ./target/release/du -sh /usr/lib
Time (mean ± σ): 1.228 s ± 0.111 s [User: 0.147 s, System: 0.209 s]
Range (min … max): 1.104 s … 1.349 s 5 runs

Summary
sudo ./target/release/du -sh /usr/lib ran
1.04 ± 0.12 times faster than sudo du -sh /usr/lib

[2/3] Benchmarking /usr/share
Benchmark 1: sudo du -sh /usr/share
Time (mean ± σ): 1.193 s ± 0.122 s [User: 0.146 s, System: 0.216 s]
Range (min … max): 1.032 s … 1.308 s 5 runs

Benchmark 2: sudo ./target/release/du -sh /usr/share
Time (mean ± σ): 1.358 s ± 0.188 s [User: 0.148 s, System: 0.215 s]
Range (min … max): 1.177 s … 1.644 s 5 runs

Summary
sudo du -sh /usr/share ran
1.14 ± 0.20 times faster than sudo ./target/release/du -sh /usr/share

[3/3] Benchmarking /var
Benchmark 1: sudo du -sh /var
Time (mean ± σ): 850.7 ms ± 133.3 ms [User: 149.7 ms, System: 204.4 ms]
Range (min … max): 753.8 ms … 1078.1 ms 5 runs

Benchmark 2: sudo ./target/release/du -sh /var
Time (mean ± σ): 908.9 ms ± 208.4 ms [User: 146.0 ms, System: 212.2 ms]
Range (min … max): 673.8 ms … 1102.7 ms 5 runs

Summary
sudo du -sh /var ran
1.07 ± 0.30 times faster than sudo ./target/release/du -sh /var
[founder@quantum-encoding-ltd coreutils]$