Re: [RFC PATCH v3 0/3] mm/damon: introduce DAMOS_SPLIT action

From: Lian Wang

Date: Mon Jul 20 2026 - 21:34:59 EST


Hi SJ,

On 7/20/2026 5:47 PM, SJ Park wrote:
> To me, it's still unclear what is the real user impact, though.
> ...
> Only after understanding what is the problem and how bad it is, we
> will be able to think of different approaches and assess those.

You are right. I will work with Sangfor to quantify the real impact
in their production scenario -- what DAMOS action is driven by the
inflated hot-memory readings, and how badly the monitoring error
affects the actual outcome.

Thank you, David, and Zi Yan for the honest and constructive feedback.
It made me realize I should have led with the problem, not the
mechanism.

Let me take a step back, gather concrete data on the problem severity,
and come back with a clearer picture. I will follow up in this thread
once I have something solid to share.

Thanks,
Lian Wang