virtio-pmem with DAX enables zero-copy memory sharing for agent sandboxes
sloppenheimer · x · 2026-09-24
The author, while correcting their agent setup, highlights virtio-pmem with DAX: mapping zero-copy from the hypervisor to the guest yields substantial memory sharing plus major memory reduction inside the guest. Next steps include evaluating which disks/filesystems fit best and exploring RL environment co-design.
Related event: Discussion on Agent Sandbox Infra: Memory Sharing and QoS Gaps(3 posts)→
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