Re: [RFC PATCH 0/8] Reduce filesystem writeback from page reclaim v2

Minchan Kim
2011-07-29T09:48:26Z

On Thu, Jul 28, 2011 at 12:38:52PM +0100, Mel Gorman wrote:
> On Thu, Jul 28, 2011 at 01:18:21AM +0900, Minchan Kim wrote:
> > On Thu, Jul 21, 2011 at 05:28:42PM +0100, Mel Gorman wrote:
> > > Note how preventing kswapd reclaiming dirty pages pushes up its CPU

<snip>

> > > usage as it scans more pages but it does not get excessive due to
> > > the throttling.
> >
> > Good to hear.
> > The concern of this patchset was early OOM kill with too many scanning.
> > I can throw such concern out from now on.
> >
>
> At least, I haven't been able to trigger a premature OOM.

AFAIR, Andrew had a premature OOM problem[1] but I couldn't track down at that time.
I think this patch series might solve his problem. Although it doesn't, it should not accelerate
his problem, at least.

Andrew, Could you test this patchset?

[1] https://lkml.org/lkml/2011/5/25/415
--
Kind regards,
Minchan Kim