Re: Swapping algorithm
Michael B Herf (herf+@cmu.edu)
Tue, 23 Apr 1996 02:43:54 -0400 (EDT)
Excerpts from internet.computing.linux-kernel: 22-Apr-96 Swapping
algorithm by Jamie Lokier@rebellion.c
> Occasionally, unmap a few random pages from random processes, so that
> they trigger page faults and add to the statistics. The pages are still
> in the page cache, of course, so it doesn't take long to map them back.
> Although there is a speed penalty for this, the improved statistics, if
> used well, mean that you are far less likely to swap out pages that are
> actively in use. How else do you find the working set of a process
> without swapping it all to disk?
Umm...you mean you can't just keep hit statistics directly?
mike