Frequently Asked Questions

Does DAMON support virtual memory only?

No. The core of the DAMON is address space independent. The address space specific monitoring operations including monitoring target regions constructions and actual access checks can be implemented and configured on the DAMON core by the users. In this way, DAMON users can monitor any address space with any access check technique.

Nonetheless, DAMON provides vma/rmap tracking and PTE Accessed bit check based implementations of the address space dependent functions for the virtual memory and the physical memory by default, for a reference and convenient use.

Can I simply monitor page granularity?

Yes. You can do so by setting the min_nr_regions attribute higher than the working set size divided by the page size. Because the monitoring target regions size is forced to be >=page size, the region split will make no effect.