Multi-Hoster-Upload/package.json
Administrator 121eac5f14 perf(uploads): 1MB read-ahead to absorb read-bursts + instrument the config-persist/load path (v3.3.98)
v3.3.97 (UV_THREADPOOL_SIZE 64→8) was a decisive win — mean event-loop-delay at
70 active uploads dropped 200ms→~11ms (18×), rss 577→287MB, renderer healthy in
14/15 windows. But the user reports it is still not perfectly smooth. A focused
multi-agent investigation plus an adversarial review localized the residual to
TWO distinct, separately-measured spike sources:

1. Read-bursts. In the tail windows the file-read histogram inverts: FSReqCallback
   climbs to 66-70 against threadpool=8 (~8.75× queue depth) while SimpleWriteWrap
   (socket writes) collapses to 4-24 and mean delay rises to 30-42ms. GC is ruled
   out (gcMax ≤27ms in every window). The clean inversion at a stable active=70 /
   pending=1287 shows the reads are causal, not a symptom of a block elsewhere.

2. A suspected synchronous config-persist stall. save() → load() reparses the whole
   electron-config.json — which now carries the 1287-job pending queue nested in
   globalSettings plus full history — on every persist (because _atomicWrite nulls
   the read cache), then _serializeForDisk JSON.stringify(…, null, 2) of all of it.
   One tail sample (max 1021ms, heap spiking to 142MB) fits a large synchronous
   structuredClone+stringify, but it is a single confounded point, so this build
   only INSTRUMENTS the path rather than asserting the cause.

This release ships one behavioral change (kept to a single variable so the next
log attributes cleanly) plus measurement:

- highWaterMark 256KB→1MB in all five streaming read loops (lib/hosters.js,
  doodstream/voe/vidmoly CHUNK_SIZE consts, and the inline value in
  clouddrop-upload.js:108 — NOT the 16MB server chunk at clouddrop-upload.js:12).
  UV_THREADPOOL_SIZE stays 8. This deepens each stream's read-ahead cushion from
  ~0.43s to ~1.7s at the per-stream rate, so a stream tolerates the threadpool
  queue without starving its socket write, and cuts read-completion callbacks and
  per-chunk Buffer allocations ~4×. Byte-correctness is unaffected: Content-Length
  is preamble+fileSize+epilogue, independent of chunk size, and the chunk size
  never touches the multipart boundaries. Fully reversible; a dedicated read-
  concurrency semaphore is held in reserve if 1MB does not clear the bursts.

- config-store.js now times load() (the full reparse, which the account-failed
  handler also hits per failure) and the _commit serialize, logging
  `config-load …` / `config-serialize wall=…ms bytes=… hist=… queue=…` when the
  synchronous work exceeds 20ms. load() is split into a timing wrapper + _loadImpl;
  the timer is a no-op until main.js wires configStore.setPerfLog → logInfo.

The renderer batch-drain fix for the one observed 243ms longtask is intentionally
deferred: that jank is downstream of the main-thread read-burst flooding IPC, so
fix #1 should make it self-heal; bundling it would confound the measurement and
touch the progress hot path. All 397 tests pass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-21 17:55:34 +02:00

57 lines
1.4 KiB
JSON

{
"name": "multi-hoster-uploader",
"version": "3.3.98",
"description": "Upload files to doodstream, voe, vidmoly, byse simultaneously",
"main": "main.js",
"scripts": {
"start": "electron .",
"test": "node --test tests/*.test.js tests/ui-smoke.js",
"dist": "electron-builder --win",
"release:win": "electron-builder --publish never --win nsis portable",
"release:gitea": "node scripts/release_gitea.mjs"
},
"dependencies": {
"chokidar": "^3.6.0",
"undici": "^7.16.0",
"ws": "^8.19.0"
},
"devDependencies": {
"electron": "^41.3.0",
"electron-builder": "^26.8.1",
"eslint": "^10.1.0",
"eslint-plugin-security": "^4.0.0",
"rcedit": "^4.0.1"
},
"build": {
"appId": "com.multihoster.uploader",
"productName": "Multi-Hoster-Upload",
"directories": {
"buildResources": "assets",
"output": "release"
},
"files": [
"main.js",
"preload.js",
"lib/**/*",
"renderer/**/*",
"assets/app_icon.ico",
"assets/app_icon.png"
],
"win": {
"target": [
"nsis",
"portable"
],
"icon": "assets/app_icon.ico",
"signAndEditExecutable": false
},
"nsis": {
"oneClick": false,
"perMachine": false,
"allowToChangeInstallationDirectory": true,
"createDesktopShortcut": true
},
"afterPack": "scripts/afterPack.cjs"
}
}