Re: Linux 6.12 New preemption model

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From	vallor <vallor@cultnix.org>
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Subject	Re: Linux 6.12 New preemption model
Date	22 Nov 2024 06:52:37 GMT
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On Fri, 22 Nov 2024 06:32:25 -0000 (UTC), Lawrence D'Oliveiro
<ldo@nz.invalid> wrote in <vhp8hp$12m83$1@dont-email.me>:

> On 22 Nov 2024 05:29:39 GMT, vallor wrote:
> 
>> Just decided in the name of Science(!), I gotta try this, and see what
>> it does to running graphical games, such as Elite Dangerous. Wish me
>> luck!
> 
> I’m going to stick my neck out and say this isn’t going to help. 
> PREEMPT_RT is for hard realtime, like pro audio/music processing where you 
> have to send/receive so many bytes every millisecond, otherwise quality 
> noticeably suffers. Things that are limited by human reflexes, like video 
> games, likely will not benefit. Human reflexes are measured in tenths of a 
> second, which is plenty of time to get things done in non-realtime 
> kernels.

I was more expecting (perhaps) smoother video and audio when
the system was under load.

We'll have to see, I couldn't go through with it:

dkms build of nvidia modules threw warnings about unknown
scheduler and mutex symbols.  Also, same for some Thelio modules.

When the NVIDIA drivers catch up, I'll try it...or I might try
nouveau, though I'm reluctant to fight with that at this late
hour.  (I think all I need is the Vulkan extensions from Mesa,
since my game uses DXVK -- but those extensions are in pretty
rough shape, so I've read.)

-- 
-v System76 Thelio Mega v1.1 x86_64 NVIDIA RTX 3090 Ti
   OS: Linux 6.12.0 Release: Mint 21.3 Mem: 258G
   "If it walks out of your refrigerator, LET IT GO !!"

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Linux 6.12 New preemption model vallor <vallor@cultnix.org> - 2024-11-22 05:29 +0000
  Re: Linux 6.12 New preemption model Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-11-22 06:32 +0000
    Re: Linux 6.12 New preemption model vallor <vallor@cultnix.org> - 2024-11-22 06:52 +0000

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