[PATCH v4 00/15] CCS static load balance

[Joonas Lahtinen]

Quoting Andi Shyti (2025-03-25 12:52:58)
> On Tue, Mar 25, 2025 at 10:24:42AM +0200, Joonas Lahtinen wrote:

<SNIP>

> > Do you have a reference to some GitLab issues or maybe some external
> > project issues where regressions around here are discussed?
> 
> AFAIK, there's no GitLab issue for this because we're not fixing
> a bug here; we're adding a new sysfs interface.

This sysfs interface was exactly designed to address performance
regressions coming from limiting the number of CCS to 1.

So unless we have a specific workload and end-user reporting a 
regression on it, there's no incentive to spend any further time here.

<SNIP>

> Arshad and Usha can definitely help if there are any technical
> questions about how the application uses the interface.

I don't have any technical questions as I specified the interface
initially :)

This is not about technical opens about how the interface works.
To recap, when we initially implemented the 1CCS mode, we got active
feedback on the community on regressions.

We were careful to verify that all userspace would cleanly fall back to
using 1CCS mode after it was implemented. And indeed, nobody has been
asking for the 4CCS mode back after the 1CCS mode bugs were fixed.

So as far as I see it, there are no users for this interface in
upstream, and thus we should not spend the time on it.

Regards, Joonas