perf: improve parallelism of real content hash plugin

[LingyuCoder]

Summary

Improve parallelism when calculating the real content hashes.

By recording the processed hashes and the hashes on which the current asset depends, if all have been processed, it is added to the current processing batch. Then process the batch together to prevent the number of tasks processed in parallel at one time from being too small, which would make the process approach sequential processing.

Before:

After:

Related links

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

[netlify]

✅ Deploy Preview for rspack canceled.

Name	Link
🔨 Latest commit	9bb6d96
🔍 Latest deploy log	https://app.netlify.com/projects/rspack/deploys/686747ca725c1c00084db36b

[github-actions]

📦 Binary Size-limit

Comparing binary size with Commit: refactor: remove js stats warning (#10900) by Cong-Cong Pan

❌ Size increased by 45.38KB from 59.80MB to 59.84MB (⬆️0.07%)

[codspeed-hq]

CodSpeed Performance Report

Merging #10888 will not alter performance

_{Comparing perf/parallel-real-content-hash (9bb6d96) with main (b0069f1)}

🎉 Hooray! codspeed-rust just leveled up to 2.7.2!

A heads-up, this is a breaking change and it might affect your current performance baseline a bit. But here's the exciting part - it's packed with new, cool features and promises improved result stability 🥳!
Curious about what's new? Visit our releases page to delve into all the awesome details about this new version.

Summary

✅ 16 untouched benchmarks

[github-actions]

📝 Benchmark detail: Open

Name	Base (2025-07-03 0932978)	Current	Change
10000_big_production-mode_disable-minimize + exec	33.8 s ± 650 ms	34.4 s ± 1.55 s	+1.90 %
10000_development-mode + exec	1.88 s ± 31 ms	1.86 s ± 33 ms	-1.18 %
10000_development-mode_hmr + exec	698 ms ± 5.3 ms	686 ms ± 12 ms	-1.70 %
10000_production-mode + exec	1.92 s ± 42 ms	1.92 s ± 45 ms	+0.19 %
10000_production-mode_persistent-cold + exec	2.07 s ± 56 ms	2.09 s ± 21 ms	+0.59 %
10000_production-mode_persistent-hot + exec	1.46 s ± 31 ms	1.53 s ± 170 ms	+4.93 %
arco-pro_development-mode + exec	1.8 s ± 50 ms	1.82 s ± 43 ms	+0.82 %
arco-pro_development-mode_hmr + exec	371 ms ± 2.1 ms	371 ms ± 3 ms	+0.16 %
arco-pro_production-mode + exec	3.27 s ± 49 ms	3.33 s ± 87 ms	+1.92 %
arco-pro_production-mode_generate-package-json-webpack-plugin + exec	3.41 s ± 105 ms	3.42 s ± 169 ms	+0.30 %
arco-pro_production-mode_persistent-cold + exec	3.37 s ± 138 ms	3.4 s ± 186 ms	+0.85 %
arco-pro_production-mode_persistent-hot + exec	2.09 s ± 55 ms	2.1 s ± 36 ms	+0.56 %
arco-pro_production-mode_traverse-chunk-modules + exec	3.34 s ± 97 ms	3.42 s ± 223 ms	+2.41 %
large-dyn-imports_development-mode + exec	2.1 s ± 50 ms	2.08 s ± 47 ms	-0.97 %
large-dyn-imports_production-mode + exec	2.05 s ± 13 ms	2.03 s ± 38 ms	-0.99 %
threejs_development-mode_10x + exec	1.45 s ± 15 ms	1.47 s ± 21 ms	+1.38 %
threejs_development-mode_10x_hmr + exec	824 ms ± 12 ms	825 ms ± 20 ms	+0.10 %
threejs_production-mode_10x + exec	4.61 s ± 198 ms	4.71 s ± 276 ms	+2.09 %
threejs_production-mode_10x_persistent-cold + exec	4.76 s ± 270 ms	4.82 s ± 213 ms	+1.40 %
threejs_production-mode_10x_persistent-hot + exec	4.18 s ± 85 ms	4.23 s ± 189 ms	+1.20 %
10000_big_production-mode_disable-minimize + rss memory	9627 MiB ± 93.1 MiB	9813 MiB ± 579 MiB	+1.93 %
10000_development-mode + rss memory	689 MiB ± 20.4 MiB	741 MiB ± 61.1 MiB	+7.42 %
10000_development-mode_hmr + rss memory	820 MiB ± 56.8 MiB	840 MiB ± 54.3 MiB	+2.53 %
10000_production-mode + rss memory	650 MiB ± 11.7 MiB	718 MiB ± 69.6 MiB	+10.57 %
10000_production-mode_persistent-cold + rss memory	776 MiB ± 29.3 MiB	802 MiB ± 42.4 MiB	+3.39 %
10000_production-mode_persistent-hot + rss memory	759 MiB ± 49.4 MiB	779 MiB ± 45 MiB	+2.73 %
arco-pro_development-mode + rss memory	600 MiB ± 55.2 MiB	618 MiB ± 59.5 MiB	+2.98 %
arco-pro_development-mode_hmr + rss memory	507 MiB ± 19.5 MiB	529 MiB ± 27 MiB	+4.28 %
arco-pro_production-mode + rss memory	692 MiB ± 52.3 MiB	741 MiB ± 53.3 MiB	+7.09 %
arco-pro_production-mode_generate-package-json-webpack-plugin + rss memory	718 MiB ± 28.9 MiB	716 MiB ± 41.9 MiB	-0.23 %
arco-pro_production-mode_persistent-cold + rss memory	800 MiB ± 47.8 MiB	835 MiB ± 107 MiB	+4.38 %
arco-pro_production-mode_persistent-hot + rss memory	678 MiB ± 50.8 MiB	694 MiB ± 73.4 MiB	+2.43 %
arco-pro_production-mode_traverse-chunk-modules + rss memory	707 MiB ± 47.2 MiB	729 MiB ± 21.4 MiB	+3.15 %
large-dyn-imports_development-mode + rss memory	716 MiB ± 4.72 MiB	720 MiB ± 13.3 MiB	+0.56 %
large-dyn-imports_production-mode + rss memory	636 MiB ± 3.66 MiB	640 MiB ± 7.19 MiB	+0.65 %
threejs_development-mode_10x + rss memory	621 MiB ± 18.5 MiB	698 MiB ± 10.3 MiB	+12.36 %
threejs_development-mode_10x_hmr + rss memory	782 MiB ± 23.8 MiB	856 MiB ± 37.2 MiB	+9.46 %
threejs_production-mode_10x + rss memory	849 MiB ± 171 MiB	979 MiB ± 35.6 MiB	+15.28 %
threejs_production-mode_10x_persistent-cold + rss memory	835 MiB ± 16.1 MiB	903 MiB ± 57.5 MiB	+8.14 %
threejs_production-mode_10x_persistent-hot + rss memory	707 MiB ± 48.2 MiB	740 MiB ± 41.5 MiB	+4.74 %