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Marc-André Bombeck
a6c3916910
Four comments still named `queue-runtime.ts` without its folder after it moved under src/__tests__/helpers/, and the v1.45.0 boot page described two dumps that are no longer kept.
29 lines
1.5 KiB
Markdown
29 lines
1.5 KiB
Markdown
# v1.45.0: boot and idle memory
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`scripts/bench/boot-profile.ts`, production build, every role, heap ceiling
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792 MB, against the seeded account, 300 s idle. "before" is the v1.44 runtime
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(`v1.45.0-before-boot.md`), "final" the v1.45.0 tree; its raw dumps are not
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kept.
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| | before | final |
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| --- | ---: | ---: |
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| longest main-thread busy stretch, application code | 753 ms (worker graph, one block) | 336 ms (query compiler start, 324 ms before as well) |
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| longest stretch loading the worker graph | 753 ms | 246 ms (one registrar) |
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| live heap after full collections, idle | 162 to 172 MB | 142 to 153 MB |
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| heap snapshot after 300 s idle | 172.3 MB | 159.5 MB |
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| parsed locale catalogs in the heap | 32 objects, 14.1 MB | 2 objects, 1.6 MB |
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| catalog chunk sources in the heap | 2 x 9.7 MB | none |
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| module source strings over 50 KB | 44.2 MB | 39.8 MB |
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| event-loop stalls logged (500 ms threshold) | 0 (monitor started late) | 0 (monitor first) |
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Time to the first health answer and to a ready worker moved with the host's
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load (1.6 s / 5.4 s before at load 9, 1.3 s / 3.2 s after at load 6) and is
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not claimed as a result.
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The rest of the 150 MB is the runtime itself: the query compiler (about
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50 MB: its engine object, its WebAssembly source and chunk, twice), compiled
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code (19 MB) and the remaining module sources. The used heap between full
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collections stayed under 240 MB in both runs; the beta's 400 MB plateau is
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garbage awaiting a collection under a larger limit plus the server caches of
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real users, not a baseline the process cannot shed.
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