Hello, On Tue, 27 Feb 2024 15:51:20 -0800 SeongJae Park <sj@xxxxxxxxxx> wrote: > On Mon, 26 Feb 2024 23:05:46 +0900 Honggyu Kim <honggyu.kim@xxxxxx> wrote: > > > There was an RFC IDEA "DAMOS-based Tiered-Memory Management" previously > > posted at [1]. > > > > It says there is no implementation of the demote/promote DAMOS action > > are made. This RFC is about its implementation for physical address > > space. [...] > Honggyu joined DAMON Beer/Coffee/Tea Chat[1] yesterday, and we discussed about > this patchset in high level. Sharing the summary here for open discussion. As > also discussed on the first version of this patchset[2], we want to make single > action for general page migration with minimum changes, but would like to keep > page level access re-check. We also agreed the previously proposed DAMOS > filter-based approach could make sense for the purpose. > > Because I was anyway planning making such DAMOS filter for not only > promotion/demotion but other types of DAMOS action, I will start developing the > page level access re-check results based DAMOS filter. Once the implementation > of the prototype is done, I will share the early implementation. Then, Honggyu > will adjust their implementation based on the filter, and run their tests again > and share the results. I just posted an RFC patchset for the page level access re-check DAMOS filter: https://lore.kernel.org/r/20240307030013.47041-1-sj@xxxxxxxxxx I hope it to help you better understanding and testing the idea. > > [1] https://lore.kernel.org/damon/20220810225102.124459-1-sj@xxxxxxxxxx/ > [2] https://lore.kernel.org/damon/20240118171756.80356-1-sj@xxxxxxxxxx Thanks, SJ [...]
