Re: [patch 0/9] mm: thrash detection-based file cache sizing v3

[Andrew Morton]

On Tue,  6 Aug 2013 18:44:01 -0400 Johannes Weiner <hannes@xxxxxxxxxxx> wrote:

> This series solves the problem by maintaining a history of pages
> evicted from the inactive list, enabling the VM to tell streaming IO
> from thrashing and rebalance the page cache lists when appropriate.

Looks nice. The lack of testing results is conspicuous ;)

It only really solves the problem in the case where

	size-of-inactive-list < size-of-working-set < size-of-total-memory

yes?  In fact less than that, because the active list presumably
doesn't get shrunk to zero (how far *can* it go?).  I wonder how many
workloads fit into those constraints in the real world.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/