pytorch/serve

how does `default_response_timeout` work?

Open

#2,452 opened on Jul 8, 2023

View on GitHub
 (6 comments) (0 reactions) (0 assignees)Java (790 forks)batch import
documentationgood first issuetriaged

Repository metrics

Stars
 (3,844 stars)
PR merge metrics
 (No merged PRs in 30d)

Description

📚 The doc issue

I set the value of default_response_timeout to 4 i.e. 4 seconds. At the start of the model load, this happens after 4 (ish) seconds:

org.pytorch.serve.wlm.WorkerInitializationException: Backend worker did not respond in given time

My guess is because the model takes a while to load (more than 4 seconds), the worker gets killed. Is there a way to set a larger initial delay i.e. differentiate these two scenarios:

  • account for the initial model load with a number different from default_response_timeout
  • if model doesn't response in default_response_timeout after the initial load, then kill the worker

Suggest a potential alternative/fix

No response

Contributor guide

Research direction
Examine the issue comments for any maintainer suggestions or workarounds. Look at the PyTorch Serve source code, particularly the worker initialization files (e.g., `wlm.py` for Python backend or relevant Java classes) to understand how `default response timeout` is currently implemented. Propose adding a separate configuration parameter like `initial load timeout` to differentiate between model loading and subsequent timeouts. Update the documentation to clarify this behavior.
Tech stack
pythonpytorchjava
Domain
documentationbackend
Issue type
Documentation
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
PyTorch Serveconfiguration
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80