Re: [patch 0/8] mm: thrash detection-based file cache sizing v5

[Rik van Riel]

On 11/12/2013 05:30 AM, Bob Liu wrote:
> Hi Johannes,
>
> On Fri, Oct 11, 2013 at 5:46 AM, Johannes Weiner <hannes@xxxxxxxxxxx> wrote:
> >          Future
> >
> > Right now we have a fixed ratio (50:50) between inactive and active
> > list but we already have complaints about working sets exceeding half
> > of memory being pushed out of the cache by simple used-once streaming
> > in the background.  Ultimately, we want to adjust this ratio and allow
> > for a much smaller inactive list.  These patches are an essential step
> > in this direction because they decouple the VMs ability to detect
> > working set changes from the inactive list size.  This would allow us
> > to base the inactive list size on something more sensible, like the
> > combined readahead window size for example.
>
> I found that this patchset have the similar purpose as
> Zcache(http://lwn.net/Articles/562254/) in some way.

Sorry, but that is unrelated.

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