Article Summary (Model: gpt-5-mini-2025-08-07)
Subject: Cowork creates 10GB VM
The Gist: A GitHub issue reports that Claude Desktop's “cowork” feature on macOS creates a persistent VM bundle (~/Library/Application Support/Claude/vm_bundles/claudevm.bundle/rootfs.img) that grows to ~10GB, regenerates after deletion, and coincides with severe performance degradation (UI lag, slow startup, high CPU and swap). Deleting the VM bundle and caches yields ~75% faster behavior temporarily, but CPU and swap usage climb again within minutes, suggesting a memory leak or accumulating background work on low-RAM systems (8GB).
Key Claims/Facts:
- VM bundle: A rootfs.img at ~/Library/Application Support/Claude/vm_bundles/... grows to ~10GB and reappears after deletion, indicating no automatic cleanup.
- Cleanup helps (temporary): Removing vm_bundles, Cache, and Code Cache reduced storage from ~11GB to ~639MB and produced ~75% speed improvements immediately.
- Observed metrics: Idle CPU ~24% rising to ~55% after minutes (renderer ~24%, main ~21%, GPU ~7%), with swap activity increasing (swapins ~20K→24K+), implying a leak or runaway background work.
Discussion Summary (Model: gpt-5-mini-2025-08-07)
Consensus: Skeptical: Commenters find the behavior worrying and consistent with broader complaints about apps and macOS storage/sandboxing, but many urge verification of the specific claim and metrics.
Top Critiques & Pushback:
Better Alternatives / Prior Art:
Expert Context: