## Summary Disable Nagle unconditionally for both exec-server Rendezvous WebSocket connections. - pass `disable_nagle=true` at the executor and harness connection call sites - keep the existing signed URL, protocol, and connection flow unchanged - add no feature flag, rollout schema, path variant, or experiment-specific telemetry The companion internal PR enables `TCP_NODELAY` on accepted Rendezvous sockets: https://github.com/openai/openai/pull/1082463 ## Why Rendezvous carries small, latency-sensitive relay and JSON-RPC frames. Three staging runs of 30 steady-state `process/read` calls per configuration measured p50 improving from 139.1 ms to 81.5 ms and p95 from 162.0 ms to 95.8 ms with Nagle disabled. The expected packet overhead is small at the current connection scale. We will use existing latency, error, packet, and CPU monitoring and revert normally if production regresses. ## Rollout and rollback The client and accepted-socket changes can deploy independently. New connections receive the setting as each side deploys. Rollback is a normal code revert; there is no persisted assignment or gate state to unwind. ## Validation - `just test -p codex-exec-server --lib`: 164 passed - `just fix -p codex-exec-server`: passed - `just fmt`: passed - independent final review found no actionable issue
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run
codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Run the following on Mac or Linux to install Codex CLI:
curl -fsSL https://chatgpt.com/codex/install.sh | sh
Run the following on Windows to install Codex CLI:
powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex"
Codex CLI can also be installed via the following package managers:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.
