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this post was submitted on 23 Apr 2024
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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I use Bazzite, AFAIK Steam OS runs inside a container, the performance is amazing. I've read the same thing from people who do VFIO GPU passthrough to a Windows VM. If you use kernel based virtualization, there should be no difference.
Containers aren't virtualization.
What do you mean?
Docker, e.g. containers, are actually a process isolation system similar but not exactly the same as a chroot if you are familiar with that. It's an isolation of resources, but not so hardware isolated like a full fat VM. For example, adding a GPU to a VM requires handing over the full PCIe hardware interface, with one interface per VM. Where as containers can just bind mount the device files in /dev and multiple containers can share the same GPU hardware. Containers aren't virtualizating anything, just isolating processes from each other in a standardized way.
A container is just an environment where it appears to any program running within it that it has full access to the computer, while in reality it's "jailed" and isolated from the rest of the system. The OS resources are shared with the container, instead of the hardware resources as in a virtual machine. There's no hardware being emulated. It's a beefed up version of a chroot.
SteamOS doesn't run inside a container, it's just an immutable image based system.