Hi all, We started sharing and discussing DAMON's current status and future plans from LSF/MM/BPF 2023. Thanks to the constructive feedbacks from the discussions, I believe DAMON is continuing the evolution in right or at least not controversial directions. To continue getting the benefit and avoid it becomes an unexpected "demon" in early stage, I'd like to share and discuss followup updates and new plans for DAMON once again on LSF/MM/BPF 2025. Major topics and currently expected materials to share on the session include below. Of course, some changes could happen. First, followups on work items that we discussed on last LSF/MM/BPF. DAMOS auto-tuning based tiered memory manamgent. No many progress has made so far. But I recently gained an access to a tiered memory system, and setting up test environment. Hopefully I will be able to share early RFC implementation and evaluation results by the session. Access/Contiguity-aware Memory Auto-scalging. No progress has made so far, too. I'm pivoting this into reliable huge contig memory occupation mechanism, though, since it is smaller scope that we can make faster. It can also be used for not only memory hotplugging based auto-scaling but also contiguous memory allocation. Hopefully early evaluation of a part of the work, probably access-aware partial compaction, will be shared by the session. Please refer to last year LSF/MM/BPF slides[1] for details of the above two projects. And new projects that currently in their early stages. Page level properties-based access monitoring. We are extending DAMOS filters that works in page level properties to further be useful for monitoring purpose. RFC patch series for the essential part[1] is already available, and user-space tool support[2] is made. By the session, hopefully the patch series will be merged in mm tree, and I will be able to share followup plans for making it more lightweight and useful. Extending DAMON for memory bandwidth monitoring. We aim to extend DAMON to support not only access pattern snapshot generation, but more general access pattern information, like memory bandwidth usage. I expect only rough idea will be shared on the session, to make early alignemnt of the future shape, or abortion. Please let me know if you have interest in status of other projects that I shared on last LSF/MM/BPF session or somewhere else. Depending on that, the topics and time portions can be changed. Note that I proposed[3] yet another LSF/MM/BPF topic for DAMON. If both are accepted, please schedule this one before the other one. I believe this session can make the other session deduplicated and faster. [1] https://github.com/damonitor/talks/blob/master/2024/lsfmmbpf/damon_lsfmmbpf_2024.pdf [2] https://damonitor.github.io/posts/damon_sz_filter_passed/ [3] https://lore.kernel.org/20250101222039.74565-1-sj@xxxxxxxxxx Thanks, SJ
