Re: Current ULE state and plans (was Re: HMP scheduling on FreeBSD)

Reply: Mark Millard : "Re: Current ULE state and plans (was Re: HMP scheduling on FreeBSD)"
In reply to: David Chisnall : "Re: Current ULE state and plans (was Re: HMP scheduling on FreeBSD)"
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From: Minsoo Choo <minsoochoo0122_at_proton.me>
Date: Fri, 23 Jan 2026 15:50:43 UTC

On Friday, January 23rd, 2026 at 10:30 AM, David Chisnall <theraven@freebsd.org> wrote:

> 
> 
> On 22 Jan 2026, at 21:00, Minsoo Choo minsoochoo0122@proton.me wrote:
> 
> > If we want real-world scenarios, phoronix test suite would be great.
> 
> 
> The Phoronix test suite is probably not helpful for schedulers. It runs a bunch of things one at a time, whereas schedulers care about dividing a shared resource among different things. It does a small number of samples and doesn’t do anything sensible with statistics to try to give you a useful number. It is a legendarily bad benchmark suite.
> 
> David

Doesn't come with stress-ng?

https://www.phoronix.com/review/freebsd-15-amd-epyc/4

It gives numbers on mixed scheduler, context switching, etc, although I have no idea if that numbers are reliable.