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From: Emanuele Rocca <ema@debian.org>
Newsgroups: linux.debian.kernel
Subject: Re: CONFIG_PREEMPT_DYNAMIC=y?
Date: Tue, 10 Oct 2023 12:40:01 +0200
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Hello Johannes,

On 2023-10-10 12:14, Johannes Schauer Marin Rodrigues wrote:
> Quoting Emanuele Rocca (2023-10-10 12:10:07)
> > Setting CONFIG_HAVE_PREEMPT_DYNAMIC=y on arm64 is likely safe for us too, but
> > we may want to run some benchmark first to see if there are any noticeable
> > slowdowns.
> 
> I have a couple of arm64 boards here that I can run benchmarks on. What would
> you recommend to run to test the effect of CONFIG_HAVE_PREEMPT_DYNAMIC=y?

I'm not sure what the best benchmark would be, but maybe you could start
with something generic like timing a kernel build with and without
PREEMPT_DYNAMIC and throwing 'hey' at your favorite web server?
https://github.com/rakyll/hey