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EPISODE · Jun 21, 2026 · 16 MIN

What Virtualization Actually Costs on 2026 Hardware

from My Weird Prompts

When you reflexively install Proxmox on a new Ubuntu server, what performance are you actually trading for those snapshot and rollback capabilities? This episode digs into real benchmark data from a Ryzen 9 7950X running Proxmox 8.3 with a single Ubuntu VM — measuring CPU cycles, memory access, disk I/O, and network throughput. We trace the overhead from VM-exits on Intel and AMD hardware, nested page table walks, virtio driver paths, and the real-world cost of that hypervisor translation layer. The answer: 2-6% depending on workload, with specific numbers for PostgreSQL, Nginx, 7-Zip compression, and NVMe disk operations.

Episode metadata supplied by the publisher feed · Published Jun 21, 2026

What this episode covers

When you reflexively install Proxmox on a new Ubuntu server, what performance are you actually trading for those snapshot and rollback capabilities? This episode digs into real benchmark data from a Ryzen 9 7950X running Proxmox 8.3 with a single Ubuntu VM — measuring CPU cycles, memory access, disk I/O, and network throughput. We trace the overhead from VM-exits on Intel and AMD hardware, nested page table walks, virtio driver paths, and the real-world cost of that hypervisor translation layer. The answer: 2-6% depending on workload, with specific numbers for PostgreSQL, Nginx, 7-Zip compression, and NVMe disk operations.

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This episode is 16 minutes long.

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This episode was published on June 21, 2026.

What is this episode about?

When you reflexively install Proxmox on a new Ubuntu server, what performance are you actually trading for those snapshot and rollback capabilities? This episode digs into real benchmark data from a Ryzen 9 7950X running Proxmox 8.3 with a single...

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