Linux 6.12 Features Super Real-Time, Sched_ext, Intel Xe2 and Pi 5

However I would say the more useful features are the less crazy version in cpusets and the various tools to deal with irq pinning. These are in extremely wide use at this point and make a world of difference even if you aren't trying to squeeze every possible thing off your cores.

And is commonly used in high end professional settings for audio...

I'm not speaking against the above comment. Audio is hard, but purely because of the timelines required with extremely low buffer sizes. It's pretty common to be running at buffer sizes at 256 samples or lower... However on a modern processor thats very low latency... At 48000 samples per second a buffer of 256 samples would generally give you a latency of 5ms give or take... But that also gives you 5ms to do all processing of that buffer which can be significant as was mentioned above.

Honestly though in my experience, FPGAs are the way to go for super low latency audio, most modern implementations are measured in micro seconds for processing stages.

The problem is you have to do all the processing on the FPGA since any round trip to the CPU would take eons compared.

Avid HDX is the pricy but industry standard for studio and post production work. There are other options but because most people don't need them so they aren't popular, most people are fine with restricting processing during recording which is when the latency is important and then when producing and mixing latency could be several hundred ms and you don't care...

Source: me, professional audio "engineer" with over a decade in the industry who has recorded multiple commercially successful albums, ad spots, generic corporate videos, radio spots and entire radio shows etc...

Something doesn't have to be perfect to enable a usage.

This thing was announced on May 2021...

So not so good is really an understatement.

https://www.raspberrypi.com/news/announcing-the-raspberry-pi...

This is even savvy marketing - it always creates some buzz around features of future chips.

I’m just an end user, so I don’t know if it’s been mentioned in a newsgroup somewhere.

If you are running a mission critical service, oh say for example wide-area emergency services dispatch, the downside is people might die and you will look like a dickhead for insisting on living on the bleeding edge.