On 2/19/07, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:hmm, is it ok to scan 100Gb of RAM for 10MB RAM container?
Alas, I fear this might have quite bad worst-case behaviour. One small
container which is under constant memory pressure will churn the
system-wide LRUs like mad, and will consume rather a lot of system time.
So it's a point at which container A can deleteriously affect things which
are running in other containers, which is exactly what we're supposed to
I think it's OK for a container to consume lots of system time during
reclaim, as long as we can account that time to the container involved
(i.e. if it's done during direct reclaim rather than by something like
in UBC patch set we used page beancounters to track containter pages.
This allows to make efficient scan contoler and reclamation.