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SubjectRE: [LSF/MM/BPF TOPIC] DAMON Updates and Future Plans
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Hi SJ,

We discussed this earlier.

- Are there plans to make DAMON monitor/manage cgroup instead of individual pids?

Thanks,
Badari

-----Original Message-----
From: SeongJae Park <sj@kernel.org>
Sent: Monday, February 13, 2023 4:33 PM
To: lsf-pc@lists.linux-foundation.org
Cc: SeongJae Park <sj@kernel.org>; damon@lists.linux.dev; linux-mm@kvack.org; linux-kernel@vger.kernel.org
Subject: [LSF/MM/BPF TOPIC] DAMON Updates and Future Plans

Hi all,


DAMON has merged into mainline as a data access monitoring tool that equips a best-effort overhead-accuracy tradeoff mechanism, and then extended for data access-aware system operations. I'd like to briefly introduce current state of DAMON and share/discuss about 2023 plans including below.

- Finer and easier-to-use DAMOS tuning
- tuning aggressiveness based on user or kernel feed (e.g., QPS or PSI)
- Merging DAMON user space tool into the mainline
- Extending DAMON
- Page-granularity monitoring
- LRU-lists based page-granulariy monitoring
- CPU-specific access monitoring
- Read/Write-only access monitoring
- More DAMON-based Operation Schemes
- Tiered memory management
- THP memory footprint reduction
- NUMA balancing

I hope to hear concerns/interests about the plans for prioritizing each work items and get some suggestions of future works and collaboration with other kernel subsystems/hackers.


Thanks,
SJ

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