this post was submitted on 04 Dec 2024
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Linux
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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've been trying to run a stable system with never overcommit and no swap . It's impossible. this is the thing that may make me a kernel developer once I retire.
I've settled for tons of swap with never overcommit but I still can't do normal things sometimes.
The downside to swap is wearing out your disk and latency when swapping, it's good to have swap usage before ram is gone to let the system have more ram available for random allocations. My goal is to never need the oom killer, but it seems like many apps (chrome and FF mostly) basically require overcommit to function.
Right now my system has 30% ram used and is still keeping 700MB is swap. I would recommend to try benchmarking your settings but I don't do that myself so I don't know what to use 😅.
You can try disabling swap with swapoff, then your system is definitely maximizing your ram use, just be prepared for the oom killer to wreck your session.