On 2020-06-15T18:19:17+02:00 SeongJae Park <sjpark@xxxxxxxxxx> wrote: > From: SeongJae Park <sjpark@xxxxxxxxx> > > Even somehow the initial monitoring target regions are well constructed > to fulfill the assumption (pages in same region have similar access > frequencies), the data access pattern can be dynamically changed. This > will result in low monitoring quality. To keep the assumption as much > as possible, DAMON adaptively merges and splits each region. > > For each ``aggregation interval``, it compares the access frequencies of > adjacent regions and merges those if the frequency difference is small. > Then, after it reports and clears the aggregated access frequency of > each region, it splits each region into two or third regions of random > size, if the total number of regions after the splits wouldn't exceed > the user-specified maximum number of regions. > > In this way, DAMON provides its best-effort quality and minimal overhead > while keeping the overhead bound. > > Signed-off-by: SeongJae Park <sjpark@xxxxxxxxx> > --- Reviewed-by: Leonard Foerster <foersleo@xxxxxxxxx>
