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Arma 3 Server unuseable with QEMU/KVM
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Description

I have just been looking into proxmox and planned to migrate my Windows Server 2022 to a KVM to have more flexibility in the choice of operating system. While testing, I noticed that A3 Server is not usable at all under KVM. As soon as a server-side sqf code is executed, the server becomes extremely slow. The code is executed, but takes forever. I have checked multiple times if it is a general problem with my VM setup, but all other applications are running fine. The problem seems to be worse when KVM is running debian/linux, windows seems to catch up with the open sqf threads and then hangs again, while linux doesn't run sqf at all after a minute.

Details

Severity
Major
Resolution
Open
Reproducibility
Always
Operating System
Windows 11 x64
Operating System Version
Tested with Windows Server 2025 latest x64 and Debian 12.9 x64
Category
Server
Steps To Reproduce

Install and Run ArmA 3 Server in QEMU/KVM linux or windows and run server-side sqf code.

Additional Information

If the issue cannot be reproduced, i can provide logs or remote access to the servers.

Event Timeline

Tallion created this task.Thu, Mar 6, 6:15 PM
Tallion added a comment.EditedThu, Mar 6, 7:36 PM

Update: Also tested LXC's and its the same issue. If it runs natively on the same server with a Debian operating system, it works perfectly.