Modal has developed a new filesystem stack for its VM Sandboxes, aiming to replicate the performance of its existing ImageFS for containers. The initial implementation using virtio-fs, which bridges VM guest operations to the host's ImageFS, resulted in significantly slower performance for common operations like file ownership changes and package installations. Modal is now investigating these performance bottlenecks to optimize the VM filesystem experience. AI
IMPACT Optimizations in VM sandboxes can improve the performance of AI agent workloads and GPU-intensive tasks.
RANK_REASON Blog post from a company detailing a technical implementation and performance challenges of their product.
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