Jan. 18, 2020
3:10 p.m.
On Wed, 15 Jan 2020 18:23:05 +0530, Anupam Kapoor said:
On Wed, 15 Jan 2020 at 6:02 PM Sumit Kumar <sumit686215@gmail.com> wrote:
Does C/C++ provide any API / system call that enables user to force the application to transfer some its physical pages to swap disk ? If so, is it also possible to obtain the least used page using some API ? would madvise not serve your needs ?
There's this word "force" in the question. The problem is that madvise() is *advice* to the kernel, not a strict guarantee. There's a difference between "If you need to move pages to disk, consider these pages first" and "Move them to disk now, whether you really wanted to or not".