On Thu, May 7, 2020 at 8:04 PM Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > Could add it to vmstat? Hi Andrew, thanks for your suggestion! I thought the same, as a second potential solution for this..was planning to add as a comment below the "---" but forgot heheh I agree that would be great in vmstat, do you have a name suggestion for it? "compaction_triggered" maybe? > Userspace could write to /dev/kmsg when it decides to trigger > compaction? Although using the kernel log seems a fairly lame way for > userspace to record its own actions... Well...you can think that the problem we are trying to solve was more like...admin forgot if they triggered or not the compaction hehe So, counting on the user to keep track of it is what I'd like to avoid. And thinking about drop_caches (that have an indication when triggered) makes me think this indeed does make sense for compaction too. Cheers, Guilherme
