Prev: ftrace: record command lines at more appropriate moment
Next: microblaze: Add KGDB support
From: KOSAKI Motohiro on 5 Aug 2010 02:30
> On Sun, Aug 01, 2010 at 05:47:08PM +0900, KOSAKI Motohiro wrote:
> > > > side note: page lock contention is very common case.
> > > >
> > > > For case (8), I don't think sleeping is right way. get_page() is used in really various place of
> > > > our kernel. so we can't assume it's only temporary reference count increasing.
> > >
> > > In what case is a munlocked pages reference count permanently increased and
> > > why is this not a memory leak?
> >
> > V4L, audio, GEM and/or other multimedia driver?
> >
>
> Ok, that is quite likely. Have you made a start on a series related to
> lumpy reclaim? I was holding off making a start on such a thing while I
> reviewed the other writeback issues and travelling to MM Summit is going
> to delay things for me. If you haven't started when I get back, I'll
> make some sort of stab at it.

Yup, I posted them today. While my lite testing, they works intentionally. it mean
- reduce low order reclaim latency
- keep high successfull rate order-9 reclaim under heavy io workload

However, they obviously need more test. comment are welcome :)




--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
From: Andreas Mohr on 5 Aug 2010 04:20
On Thu, Aug 05, 2010 at 03:20:44PM +0900, KOSAKI Motohiro wrote:
> Yup, I posted them today. While my lite testing, they works intentionally. it mean
> - reduce low order reclaim latency
> - keep high successfull rate order-9 reclaim under heavy io workload
>
> However, they obviously need more test. comment are welcome :)

Thanks a lot!

I've been following recent discussions,
however testing is planned to be done in nearer future
since I'm currently "recovering" from large backlog (Thesis).

Andreas Mohr
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
First  |  Prev  | 
Pages: 1 2 3
Prev: ftrace: record command lines at more appropriate moment
Next: microblaze: Add KGDB support