Tarit – a hypervisor which is 2x faster than firecracker
We have built Tarit as a hypervisor built from ground up for running AI agent and RL environments. It is based on rust-vmm and can be used as a replacement for firecracker. Firecracker was built to serve a different need of primarily serverless compute and hence does not have primitives like live snapshots without pausing the VM operations. We also provide a basic orchestrator that handles placement of the microVMs, creating clusters with HA, maintaining a warm pool of VMs, and takes care of setting up networking and monitoring. Our benchmarks on a metal instance shows an acquire VM from…
Tarit – a hypervisor which is 2x faster than firecracker launched on July 15, 2026 with 12 votes, #1,321 of 24,623 launches that month and more than 90% of that year's launches.
In plain words
Tarit is a hypervisor designed to run virtual machines with twice the speed of Firecracker. It is built for developers and infrastructure teams who need efficient virtualization for containerized workloads, serverless computing, or lightweight VM deployment. The project is available on GitHub for those interested in exploring or contributing to its development.
written from the facts on this page · September 2026
From the sources
A hypervisor and sandbox cloud for self-hosting AI agents and RL - instavm/tarit
A KVM microVM platform for AI agents and isolated execution. Tarit is a microVM platform for secure, fast, ephemeral sandboxes, built for AI agent workloads. It boots a real hardware-virtualized VM in milliseconds, runs a task inside it, and tears it down. Each sandbox has a guest kernel rather than sharing the host kernel; production containment also depends on the host-side controls described in SECURITY.md . Jailed orchestrated VMMs support dedicated PID and process network namespaces; the host-owned TAP queue is passed by descriptor so host routing and traffic policy remain outside the VMM namespace. They talk over a Unix-domain-socket protocol whose types live in one shared,…from github.com
In the maker’s words, at launch
We have built Tarit as a hypervisor built from ground up for running AI agent and RL environments. It is based on rust-vmm and can be used as a replacement for firecracker. Firecracker was built to serve a different need of primarily serverless compute and hence does not have primitives like live snapshots without…
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Sub-millisecond VM sandboxes using CoW memory forkingMar 2026 · github.com · ▲311I wanted to see how fast an isolated code sandbox could start if I never had to boot a fresh VM. So instead of launching a new microVM per execution, I boot Firecracker once with Python and numpy already loaded, then snapshot the full VM state. Every execution after that creates a new KVM VM backed by a `MAP_PRIVATE` mapping of the snapshot memory, so Linux gives me copy-on-write pages automatically. That means each sandbox starts from an already-running Python process inside a real VM, runs the code, and exits. These are real KVM VMs, not containers: separate guest kernel, separate guest…
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Source: Show HN post ↗ · launch text quoted in part
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I might be the only SRE on Earth with his own bowling center. It's a more in-depth gig than you'd think. My family and I bought an abandoned 8-lane bowling center in the rural mid-west. In our small town there weren't many recreation options for families. You've heard of a food desert? This is an R&R desert. It had been abandoned for a good reason. The roof leaks, the electrical system was constantly surging, and my 70-year-old bowling equipment (still) doesn't work perfectly. The system that keeps your score is particularly interesting to me. It's the thing you watch during your game, but…
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