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Welcome to CRIU, a project to implement checkpoint/restore functionality for Linux in userspace.
Using
- CR tools
- Main checkpoint/restore utility description (sort of HOWTO)
- Usage scenarios
- Ideas how crtools can be used (some are crazy indeed)
- What software is supported
- Describes TODO list in higher level terms
Developing
If you're interested in CRIU development, subscribe to the criu mailing list: https://openvz.org/mailman/listinfo/criu
- Images
- Description of image files format
- Commits
- Mainline kernel commits tracker
- ZDTM
- Zero downtime test suite
- TODO
- Current TODO list
External links
- 2026-07-22, Forensic Analysis of Container Snapshot Chains for Post-event Reconstruction
- 2026-07-14, Accelerating Model Inference with On‑the‑Fly Snapshot Compression
- 2026-07-09, Reverse-engineering NVIDIA's cuda-checkpoint for Faster Cold Starts
- 2026-06-29, Fast vLLM: cutting cold starts by 20x
- 2026-06-25, Elastic Resource Management for Heterogenous Container-Based Clouds
- 2026-06-01, NVIDIA Dynamo Snapshot: Fast Startup for Inference Workloads on Kubernetes
- 2026-05-12, How we achieved truly serverless GPUs
- 2026-04-27, Towards On-the-Fly Snapshot Memory Compression for Low-Latency Elastic Inference Serving Systems
- 2026-04-06, Cloudburst: 70x faster cold(ish) starts for SGLang
- 2026-02-24, GPU Checkpoint/Restore Made Fast and Lightweight
- 2026-01-21, Announcing the Checkpoint/Restore Working Group
- 2025-11-17, Engine-Agnostic Model Hot-Swapping for Cost-Effective LLM Inference
Under the hood
Articles about how things are done in crtools