Re: [RFC][PATCH][0/4] Memory controller (RSS Control)

From: Paul Menage
Date: Mon Feb 19 2007 - 04:06:47 EST

On 2/19/07, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:

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
not do.

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

Churning the LRU could well be bad though, I agree.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at