Environment
- Vault Operator: 3.8.1 / Obsidian 1.13.7 / macOS (Apple Silicon) M1 Pro 16 gb
- Vault: ~885 .md files, ~477 MB total
knowledge.db: ~93 MB, 4,905 vectors (all 4096-dim, embedding_model='unknown'), 210 edges, 812 note summaries, 0 implicit_edges- Embedding config:
enableSemanticIndex: true, active model qwen/qwen3-embedding-8b (remote API), enableImplicitConnections: true, implicitThreshold: 0.7, enableReranking: true, enableGraphExpansion: true
Repro
- Disable all community plugins → Obsidian starts fast, CPU idle.
- Enable only
vault-operator → Obsidian loads UI but freezes; renderer process at 99–100% CPU for 5+ min, no disk/network I/O (lsof shows no vault/DB traffic).
- Clearing
inflight-tasks.json (4 abandoned executing-tools tasks), disabling autoTaskRouter, and then setting enableImplicitConnections: false in both data.json and settings.json did NOT fix it.
Suspected hot paths (from reading 3.8.1 main.js)
computeAll() (ImplicitConnections): O(n²) all-pairs 4096-dim cosine YG() over all note vectors, queued as boot job "implicit connections". 4,905 notes ≈ 12M pairs ≈ ~50B flops on the main thread.proposeOrphanLinks(): per-orphan × all-notes YG() loop (called from vault-health orphan path); with ~2,800 orphans × 4,905 notes this is also O(n²)-scale.checkInconsistentTags(): hc_tags self-join (t1.tag < t2.tag AND LOWER(t1.tag)=LOWER(t2.tag)), queued via boot job "vault health".sample stacks show main thread 100% inside V8 JS (minified, no symbols) with idle WASM worker threads — consistent with a JS cosine-loop spin, not ONNX/reranker or network wait.
Expected
Heavy similarity jobs should not run synchronously on the main thread at startup, should be cancellable/skippable when implicit_edges is empty, and should yield (the setTimeout(0) yield exists in computeAll but apparently never lets the UI breathe at this scale).
Related
Environment
knowledge.db: ~93 MB, 4,905 vectors (all 4096-dim,embedding_model='unknown'), 210 edges, 812 note summaries, 0implicit_edgesenableSemanticIndex: true, active modelqwen/qwen3-embedding-8b(remote API),enableImplicitConnections: true,implicitThreshold: 0.7,enableReranking: true,enableGraphExpansion: trueRepro
vault-operator→ Obsidian loads UI but freezes; renderer process at 99–100% CPU for 5+ min, no disk/network I/O (lsofshows no vault/DB traffic).inflight-tasks.json(4 abandonedexecuting-toolstasks), disablingautoTaskRouter, and then settingenableImplicitConnections: falsein bothdata.jsonandsettings.jsondid NOT fix it.Suspected hot paths (from reading 3.8.1
main.js)computeAll()(ImplicitConnections): O(n²) all-pairs 4096-dim cosineYG()over all note vectors, queued as boot job "implicit connections". 4,905 notes ≈ 12M pairs ≈ ~50B flops on the main thread.proposeOrphanLinks(): per-orphan × all-notesYG()loop (called from vault-health orphan path); with ~2,800 orphans × 4,905 notes this is also O(n²)-scale.checkInconsistentTags():hc_tagsself-join (t1.tag < t2.tag AND LOWER(t1.tag)=LOWER(t2.tag)), queued via boot job "vault health".samplestacks show main thread 100% inside V8 JS (minified, no symbols) with idle WASM worker threads — consistent with a JS cosine-loop spin, not ONNX/reranker or network wait.Expected
Heavy similarity jobs should not run synchronously on the main thread at startup, should be cancellable/skippable when
implicit_edgesis empty, and should yield (thesetTimeout(0)yield exists incomputeAllbut apparently never lets the UI breathe at this scale).Related