How does timeout work in llms

[pip-install-skills]

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Example Code

from langchain_openai import AzureChatOpenAI
import time

llm = AzureChatOpenAI(
    azure_deployment="gpt-4o",
    timeout=2
)
start = time.time()
try:
    print(llm.invoke("Hello"))
except Exception as e:
    print(e)
finally:
    print(time.time() - start)

Description

When the timeout is 1 it waited for 5.9 seconds before giving timeout error, when it is 2 it waited for 8.9 seconds, how do you guys use it to calculate the seconds?

System Info

langchain==0.3.17
langchain-aws==0.2.15
langchain-core==0.3.33
langchain-google-genai==2.0.9
langchain-mongodb==0.4.0
langchain-openai==0.3.3
langchain-qdrant==0.2.0
langchain-text-splitters==0.3.5

[pip-install-skills]

I want have a timeout of 30 seconds