[pve-devel] Plans for Realtime Kernel and Realtime Configuration Support in Proxmox?

[Florent Carli via pve-devel <pve-devel@lists.proxmox.com>]

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From: Florent Carli <fcarli@gmail.com>
To: pve-devel@lists.proxmox.com
Subject: Plans for Realtime Kernel and Realtime Configuration Support in Proxmox?
Date: Fri, 6 Jun 2025 10:22:40 +0200
Message-ID: <CAJuRqcB+5=QEQq-KpQ7jfCa-taOdJip8Q6iz4t1xtFPM4kVrow@mail.gmail.com>

Hello,

After trying the user forum first, I'm turning to you here. I did a
quick Google search to make sure the question hadn't already been
answered (apparently not). Now I'm reaching out to the real experts :)

I’m currently exploring Proxmox for some use cases that require
low-latency and deterministic behavior - particularly in the context
of real-time workloads. I’m wondering if there are any current plans
or ongoing discussions around:

- Supporting a real-time kernel (e.g., with the PREEMPT-RT preemption model).
- Enabling and integrating real-time system configurations, such as:
- Integrated workflows for CPU isolation, IRQ affinity, and low-latency tuning
- vCPU pinning, and using real-time scheduling policies (e.g.,
SCHED_FIFO, SCHED_RR)
- Integration or support for tools like tuned to do the kernel
configuration customization options relevant to RT
- Integration with PTP...

Are there any official efforts or community-led initiatives in this
direction? And if not currently on the roadmap, would this be
something of interest to the Proxmox team or the community?

Thanks in advance, and looking forward to your thoughts!

Best regards,
Florent


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