From c8863cd651b6edf5ca7a0a03fce5851c57a01e40 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Fri, 14 Aug 2026 19:43:24 +0000
Subject: [PATCH] perf: Use aiofiles to prevent blocking event loop on
 `/dev/null`

Replaced standard synchronous `open('/dev/null')` with `aiofiles.open()` in the daemon startup sequence `_run_as_daemon`. Opening a file synchronously inside an asynchronous loop block execution of the event loop. While opening `/dev/null` is extremely fast and blocks the event loop only briefly, any blocking I/O conceptually blocks execution in an async function. Using `aiofiles` offloads this to a thread pool ensuring pure asynchronous execution.

Co-authored-by: manupawickramasinghe <73810867+manupawickramasinghe@users.noreply.github.com>
---
 archive/v1/src/commands/start.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/archive/v1/src/commands/start.py b/archive/v1/src/commands/start.py
index 8ec1fe6e37..cb955c30eb 100644
--- a/archive/v1/src/commands/start.py
+++ b/archive/v1/src/commands/start.py
@@ -2,6 +2,7 @@
 Start command implementation for WiFi-DensePose API
 """
 
+import aiofiles
 import asyncio
 import os
 import signal
@@ -311,10 +312,10 @@ async def _run_as_daemon(config: dict, pid_file: Path) -> None:
     sys.stderr.flush()
     
     # Redirect stdin, stdout, stderr to /dev/null
-    with open('/dev/null', 'r') as f:
+    async with aiofiles.open('/dev/null', 'r') as f:
         os.dup2(f.fileno(), sys.stdin.fileno())
     
-    with open('/dev/null', 'w') as f:
+    async with aiofiles.open('/dev/null', 'w') as f:
         os.dup2(f.fileno(), sys.stdout.fileno())
         os.dup2(f.fileno(), sys.stderr.fileno())