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Remove database warmup (proven ineffective - real bottleneck was bcrypt blocking event loop)

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YueGuobin 2026-06-16 00:35:42 +08:00
parent ccb629f48f
commit a8cc01af46
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1 changed files with 0 additions and 11 deletions
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gns3server/db/tasks.py
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@ -99,17 +99,6 @@ async def connect_to_db(app: FastAPI) -> None:
return row[0] if row else "unknown"
wal_mode = await _verify_conn.run_sync(_check_wal)
log.info(f"SQLite journal mode: {wal_mode} {'✅' if wal_mode and wal_mode.upper() == 'WAL' else '❌ will cause database contention'}")
# Warm up the OS page cache by reading the entire database file.
# The first API query suffers 8-14s cold-start penalty when the file
# isn't in cache (SQLite + OS page cache combined).
try:
db_file_size = os.path.getsize(db_path)
with open(db_path, "rb") as f:
while f.read(1024 * 1024): # 1MB chunks
pass
log.info(f"Database warmed up ({db_file_size / 1024:.0f} KB)")
except OSError as e:
log.warning(f"Could not warm up database file: {e}")
alembic_cfg = config.Config()
alembic_cfg.set_main_option("script_location", "gns3server:db_migrations")
#alembic_cfg.set_main_option('sqlalchemy.url', db_url)