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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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The realtime preemption end game — for real this time [LWN.net] (lwn.net)

submitted 1 week ago* (last edited 1 week ago) by petsoi@discuss.tchncs.de to c/linux@lemmy.ml

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Work on realtime preemption for the Linux kernel got its start almost exactly 20 years ago (though it had its roots in earlier work, of course). It is fair to say that finishing that job has taken a bit longer than anybody involved would have expected. Now, though, Sebastian Andrzej Siewior has posted a brief patch series making it possible to enable realtime preemption in the mainline kernel on three architectures.

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[–] SaveMotherEarthEDF@lemmy.world 6 points 1 week ago

After going through a rabbit hole what I learned that this patch does is to allow time critical applications at top priority.

Most of popular linux distributions already have this patch applied in one form or another.

What I think it means for end user is that if applications use this part of linux kernel correctly, then they can speed up some core parts, be more responsive, and stable. But if it's abused, it can end up slowing the whole system.