fix: patched mimalloc to use MADV_DONTNEED than MADV_FREE on Linux

[h-a-n-a]

Summary

Use patched mimalloc to use MADV_DONTNEED instead of MADV_FREE on reseting memory.
This also takes effect on macOS.

While MADV_FREE is faster than MADV_DONTNEED, it does not affect the RSS as MADV_DONTNEED does.
To reiterate, using MADV_DONTNEED means process-level memory statistics like RSS will be more
accurately reflect the amount of physical memory being used by rspack.

Even this does not show any evidence that it would cause OOM issues, the fact seems stay the opposite
with reported incidents in go. GoLang team and many have encountered this issue and have reverted the option to MADV_DONTNEED in golang/go#42330.

Rspack uses mimalloc for memory management.
The default strategy of mimalloc@2 is to purge the memory instead of reseting them.
However, in some cases, it would still reset memory (mi_free_block_mt, freeing blocks multi-thread):

With this patch, MADV_FREE is replaced with MADV_DONTNEED:

Related: microsoft/mimalloc#776
Rspack related: #8976

Checklist

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

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[github-actions]

📝 Benchmark detail: Open

Name	Base (2025-01-17 2cb67d1)	Current	Change
10000_big_production-mode_disable-minimize + exec	37.5 s ± 811 ms	38.8 s ± 507 ms	+3.49 %
10000_development-mode + exec	1.86 s ± 165 ms	1.84 s ± 49 ms	-1.06 %
10000_development-mode_hmr + exec	687 ms ± 25 ms	683 ms ± 18 ms	-0.65 %
10000_production-mode + exec	2.43 s ± 122 ms	2.41 s ± 135 ms	-0.60 %
10000_production-mode_persistent-cold + exec	2.52 s ± 19 ms	2.52 s ± 50 ms	-0.11 %
10000_production-mode_persistent-hot + exec	1.77 s ± 23 ms	1.76 s ± 26 ms	-0.76 %
arco-pro_development-mode + exec	1.78 s ± 111 ms	1.74 s ± 90 ms	-2.55 %
arco-pro_development-mode_hmr + exec	388 ms ± 6.1 ms	387 ms ± 2.5 ms	-0.37 %
arco-pro_production-mode + exec	3.78 s ± 221 ms	3.68 s ± 191 ms	-2.77 %
arco-pro_production-mode_generate-package-json-webpack-plugin + exec	3.72 s ± 187 ms	3.68 s ± 142 ms	-1.08 %
arco-pro_production-mode_persistent-cold + exec	3.92 s ± 119 ms	3.88 s ± 213 ms	-1.03 %
arco-pro_production-mode_persistent-hot + exec	2.47 s ± 107 ms	2.49 s ± 181 ms	+0.79 %
arco-pro_production-mode_traverse-chunk-modules + exec	3.76 s ± 91 ms	3.69 s ± 177 ms	-1.99 %
large-dyn-imports_development-mode + exec	2.1 s ± 26 ms	2.08 s ± 59 ms	-1.08 %
large-dyn-imports_production-mode + exec	2.14 s ± 29 ms	2.15 s ± 17 ms	+0.44 %
threejs_development-mode_10x + exec	1.62 s ± 36 ms	1.61 s ± 21 ms	-0.32 %
threejs_development-mode_10x_hmr + exec	760 ms ± 13 ms	771 ms ± 34 ms	+1.41 %
threejs_production-mode_10x + exec	5.48 s ± 193 ms	5.54 s ± 334 ms	+1.21 %
threejs_production-mode_10x_persistent-cold + exec	5.52 s ± 50 ms	5.62 s ± 467 ms	+1.86 %
threejs_production-mode_10x_persistent-hot + exec	4.68 s ± 344 ms	4.71 s ± 87 ms	+0.60 %
10000_big_production-mode_disable-minimize + rss memory	9567 MiB ± 503 MiB	8700 MiB ± 42.7 MiB	-9.06 %
10000_development-mode + rss memory	662 MiB ± 6.56 MiB	659 MiB ± 11.1 MiB	-0.46 %
10000_development-mode_hmr + rss memory	1399 MiB ± 344 MiB	1368 MiB ± 51.1 MiB	-2.25 %
10000_production-mode + rss memory	674 MiB ± 55.3 MiB	646 MiB ± 14.1 MiB	-4.16 %
10000_production-mode_persistent-cold + rss memory	763 MiB ± 46.4 MiB	744 MiB ± 12.2 MiB	-2.49 %
10000_production-mode_persistent-hot + rss memory	776 MiB ± 54.8 MiB	741 MiB ± 28.5 MiB	-4.54 %
arco-pro_development-mode + rss memory	570 MiB ± 60.3 MiB	570 MiB ± 34.1 MiB	+0.04 %
arco-pro_development-mode_hmr + rss memory	590 MiB ± 69.9 MiB	676 MiB ± 81.9 MiB	+14.52 %
arco-pro_production-mode + rss memory	748 MiB ± 52.4 MiB	722 MiB ± 23.1 MiB	-3.55 %
arco-pro_production-mode_generate-package-json-webpack-plugin + rss memory	719 MiB ± 92.8 MiB	724 MiB ± 35.6 MiB	+0.66 %
arco-pro_production-mode_persistent-cold + rss memory	819 MiB ± 45.7 MiB	847 MiB ± 17.3 MiB	+3.41 %
arco-pro_production-mode_persistent-hot + rss memory	682 MiB ± 31.6 MiB	707 MiB ± 21.9 MiB	+3.68 %
arco-pro_production-mode_traverse-chunk-modules + rss memory	710 MiB ± 87 MiB	718 MiB ± 23.9 MiB	+1.16 %
large-dyn-imports_development-mode + rss memory	636 MiB ± 5.9 MiB	646 MiB ± 5.61 MiB	+1.56 %
large-dyn-imports_production-mode + rss memory	531 MiB ± 6.77 MiB	528 MiB ± 6.94 MiB	-0.52 %
threejs_development-mode_10x + rss memory	567 MiB ± 24 MiB	528 MiB ± 7.73 MiB	-6.99 %
threejs_development-mode_10x_hmr + rss memory	1139 MiB ± 227 MiB	1144 MiB ± 97.1 MiB	+0.37 %
threejs_production-mode_10x + rss memory	870 MiB ± 67.3 MiB	816 MiB ± 20.4 MiB	-6.18 %
threejs_production-mode_10x_persistent-cold + rss memory	980 MiB ± 54.2 MiB	944 MiB ± 34.2 MiB	-3.66 %
threejs_production-mode_10x_persistent-hot + rss memory	904 MiB ± 46.5 MiB	844 MiB ± 30.2 MiB	-6.57 %

[codspeed-hq]

CodSpeed Performance Report

Merging #9037 will not alter performance

_{Comparing mimalloc-downgrade (2c39c4f) with main (8d6406d)}

Summary

✅ 3 untouched benchmarks

[chenjiahan]

👍