Subject: Re: [patch 0/3] net, refcount: Address dst_entry reference count scalability issues

From: Thomas Gleixner <[email-masked]>
Date: Wed, 01 Mar 2023 11:40:11 +0100

On Tue, Feb 28 2023 at 19:17, Jakub Kicinski wrote:
> FWIW looks good to me, especially the refcount part.
> We do see 10% of jitter in microbenchmarks due to random cache
> effects, so forgive the questioning.

Yes, those things are hard to measure. 

> But again, the refcount seems like an obvious win to my noob eyes.
>
> While I have you it would be remiss of me not to mention my ksoftirq
> change which makes a large difference in production workloads:
> https://lore.kernel.org/all/[email-masked]/

Let me find this again.

> Is Peter's "rework" of softirq going in for 6.3?

Not that I'm aware of. That had a few loose ends and got lost in space
AFAICT.

Thanks,

        tglx