David Snelling
96624f408c
A production restart storm measured 90,017ms for a single brain init vs 1,117ms quiet (~80x contention multiplier), traced to performInit() eagerly awaiting the process-global WASM embedding engine before the VFS root even existed. Every writer's open() queued on the one throttled model compile (90-140s on throttled CPUs). - VirtualFileSystem.doInitializeRoot() no longer embeds '/'. The root is system-tier plumbing nothing ever searches; when the default WASM engine is active it now gets an explicit all-zero placeholder vector (cosineDistance returns max distance for a zero vector, so it never ranks ahead of real content). deferEmbedding was considered and rejected: its landing path kicks the embed worker synchronously right after commit, which would still force the cold compile within milliseconds — just off the awaited path, not avoided. A registered native 'embeddings' provider (no cold-start cost, possibly a different dimension) still embeds the root for real, via the new Brainy.usesDefaultWasmEmbedder() seam. - performInit()'s eager-embedding step now only STARTS the WASM engine warm in the background instead of awaiting it inline. embed()/embeddingManager already serialize concurrent callers on one shared init promise, so the first real embed() converges correctly either way; a failed warm narrates loudly instead of surfacing as a silent latency spike or an unhandled rejection. eagerEmbeddings: false still means no warm at all. - FileSystemStorage.init() batches its ~8 independent bootstrap mkdirs (each creates its own full subtree via recursive:true, so none depend on the others existing) into one Promise.all. The restore-completion step and initializeCounts() stay strictly sequential — they have real order dependencies on rootDir and systemDir respectively. - performInit() now times five phases (storage init / generation-store open+fold / index init+gate / VFS bootstrap / embedding-warm-started) and logs one warning with the per-phase breakdown when total open exceeds 2000ms; silent otherwise. |
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| .. | ||
| api | ||
| benchmarks | ||
| comprehensive | ||
| configs | ||
| conformance | ||
| fixtures | ||
| helpers | ||
| integration | ||
| integrations | ||
| lifecycle | ||
| performance | ||
| regression | ||
| scripts | ||
| transaction | ||
| unit | ||
| vfs | ||
| critical-neural-validation.test.ts | ||
| critical-performance-benchmark.test.ts | ||
| model-loading.test.ts | ||
| package-size-breakdown.test.ts | ||
| package-size-limit.test.ts | ||
| setup-integration.ts | ||
| setup-semantic.ts | ||
| setup-unit.ts | ||
| setup.ts | ||
| type-utils.unit.test.ts | ||