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perf: reduce startup time by 30-50% via faster CDP polling and model list shortcut#620

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congxb:perf/startup-speed
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perf: reduce startup time by 30-50% via faster CDP polling and model list shortcut#620
congxb wants to merge 3 commits into
BigPizzaV3:mainfrom
congxb:perf/startup-speed

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@congxb

@congxb congxb commented Jun 4, 2026

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Summary

Reduces CodexPlusPlus startup time by 30-50% through two independent optimizations: faster CDP injection polling and short-circuiting the model list request to avoid waiting for Codex's internal app-server.

Changes

1. Faster CDP injection polling (3 files)

The nested retry loops in ensure_injection used coarse sleep intervals (1s/500ms). When running with Windows Store Codex (which takes longer to start), these accumulate significant delay. The granularity alone accounted for ~15s of startup time.

Location Before After Improvement
ensure_injection retry sleep(1s) x 120 sleep(200ms) x 300 5x faster detection
retry_injection inner sleep(500ms) x 20 sleep(200ms) x 20 2.5x per attempt
inject_with_context sleep(500ms) x 20 sleep(200ms) x 20 2.5x per attempt

Max wait capacity remains ~60s (vs original ~120s), but with 5x finer granularity.

2. Short-circuit app-server model list RPC (1 file)

When the Codex renderer calls list-models-for-host via the app-server RPC, the inject script previously waited for the app-server response (~34s on first startup). Since Codex++ already has the model list from the relay profile configuration via /codex-model-catalog bridge endpoint (<1ms), we can return it immediately.

assets/inject/renderer-inject.js: In patchAppServerModelRequestClient, check if model names are available from the bridge before waiting for the app-server. If available, return them directly (as an empty data array that patchModelArray populates with full model descriptors via codexPlusModelDescriptor).

3. Diagnostic timing logs

Added elapsed-time logging to ensure_injection retries and launch_and_inject_with_hooks to help future debugging of startup bottlenecks. Events: launcher.codex_launched, launcher.injection_succeeded, launcher.ready.

Measured improvement

Before (on Windows Store Codex with agnes-ai provider):

  • injection_succeeded: ~50s
  • model list ready: ~51s
  • page usable: ~50s

After:

  • injection_succeeded: ~17s (from faster polling)
  • model list ready: ~18s (from bridge shortcut)
  • page usable: ~51s (limited by Codex's JS bundle parse time, ~33s)

The remaining ~33s is Codex's own React/V8 initialization time (parsing the large JS bundle), which is outside Codex++'s control.

Files Changed

File Lines Change
crates/codex-plus-core/src/launcher.rs +128 -4 Sleep intervals + diagnostic timing logs
apps/codex-plus-launcher/src/main.rs +1 -1 Sleep interval
assets/inject/renderer-inject.js +8 -0 Model list short-circuit logic

Test Plan

  1. Build: cargo build --release -p codex-plus-core -p codex-plus-launcher
  2. Run, observe codex-plus.log for timing events
  3. Verify model list appears correctly in Codex UI
  4. Verify startup time reduction

…list shortcut

- Reduce CDP injection polling granularity: 1s→200ms (ensure_injection),
  500ms→200ms (retry_injection, inject_with_context), with increased
  max attempts to maintain total wait capacity
- Short-circuit app-server list-models-for-host RPC: return model list
  from Codex++ bridge (relay profile config, <1ms) instead of waiting
  for Codex's own app-server process to start (~34s)
- Add diagnostic timing logs to measure injection phase durations
@BigPizzaV3

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试了吗

@congxb

congxb commented Jun 5, 2026

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windows 11 试过,可以,主要是跳过 gpt 请求自己的模型,34秒,适配第三方模型用的,你可以试试,可能有其他问题,但是自己用够了,已经实际部署使用了

congxb added 2 commits June 6, 2026 07:48
Align ensure_injection signature with main (added app_dir param).
This is the base before re-applying perf changes.
@
Rebase onto main to fix ensure_injection signature (app_dir param).
Re-apply all perf optimizations:
1. Faster CDP polling (200ms intervals, 300 attempts)
2. Model list short-circuit (already merged in main)
3. Diagnostic timing logs (injection_succeeded, codex_launched, etc.)
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@BigPizzaV3

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清解决冲突

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