Hi!
> > 1. I doubt ZONE_DMA, please shipment ignore zone_dma patch(below).
>
> Your patch above solves the problem I had with early notification.
really!?
I am really happy!!
Thanks you.
- kosaki
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On 1/17/08, KOSAKI Motohiro <[EMAIL PROTECTED]> wrote:
> Hi Daniel
>
> > > Thank you for good point out!
> > > Could you please post your test program and reproduced method?
> >
> > Sure:
> >
> > 1. Fill almost all available memory with page cache in a system without
> > swap.
> > 2. Run attached
Hi Daniel
> > Thank you for good point out!
> > Could you please post your test program and reproduced method?
>
> Sure:
>
> 1. Fill almost all available memory with page cache in a system without swap.
> 2. Run attached alloc-test program.
> 3. Notification fires when page cache is reclaimed.
On 1/16/08, KOSAKI Motohiro <[EMAIL PROTECTED]> wrote:
> Hi Daniel
>
> > > > The notification fires after only ~100 MB allocated, i.e., when page
> > > > reclaim is beginning to nag from page cache. Isn't this a bit early?
> > > > Repeating the test with swap enabled results in a notification after
Hi Daniel
> > > The notification fires after only ~100 MB allocated, i.e., when page
> > > reclaim is beginning to nag from page cache. Isn't this a bit early?
> > > Repeating the test with swap enabled results in a notification after
> > > ~600 MB allocated, which is more reasonable and just befo
On 1/15/08, Rik van Riel <[EMAIL PROTECTED]> wrote:
>
> On Tue, 15 Jan 2008 23:55:17 +0100
> "Daniel Spång" <[EMAIL PROTECTED]> wrote:
>
> > The notification fires after only ~100 MB allocated, i.e., when page
> > reclaim is beginning to nag from page cache. Isn't this a bit early?
> > Repeating th
On Tue, 15 Jan 2008 23:55:17 +0100
"Daniel Spång" <[EMAIL PROTECTED]> wrote:
> The notification fires after only ~100 MB allocated, i.e., when page
> reclaim is beginning to nag from page cache. Isn't this a bit early?
> Repeating the test with swap enabled results in a notification after
> ~600 M
Hi,
On 1/15/08, KOSAKI Motohiro <[EMAIL PROTECTED]> wrote:
> the notification point to happen whenever the VM moves an
> anonymous page to the inactive list - this is a pretty good indication
> that there are unused anonymous pages present which will be very likely
> swapped out soon.
> +
Hi Kame,
> > > > + notify_threshold = (zone->pages_high +
> > > > + zone->lowmem_reserve[MAX_NR_ZONES-1]) * 2;
> > > > +
> > > Why MAX_NR_ZONES-1 ?
> >
> > this is intent to max lowmem_reserve.
> >
> Ah, my point is.. how about this ?
> ==
> if (page_zoneid(page)
On Tue, 15 Jan 2008 11:37:48 +0900
KOSAKI Motohiro <[EMAIL PROTECTED]> wrote:
> Hi KAME,
>
> > > + notify_threshold = (zone->pages_high +
> > > + zone->lowmem_reserve[MAX_NR_ZONES-1]) * 2;
> > > +
> > Why MAX_NR_ZONES-1 ?
>
> this is intent to max lowmem_reserve.
>
Ah, my p
Hi KAME,
> > + notify_threshold = (zone->pages_high +
> > + zone->lowmem_reserve[MAX_NR_ZONES-1]) * 2;
> > +
> Why MAX_NR_ZONES-1 ?
this is intent to max lowmem_reserve.
in normal case,
shrink_active_list isn't called when free_pages > pages_high.
but just after memory
On Tue, 15 Jan 2008 10:02:30 +0900
KOSAKI Motohiro <[EMAIL PROTECTED]> wrote:
> +
> + notify_threshold = (zone->pages_high +
> + zone->lowmem_reserve[MAX_NR_ZONES-1]) * 2;
> +
Why MAX_NR_ZONES-1 ?
> + if (unlikely((prev_free <= notify_threshold) &&
> +
the notification point to happen whenever the VM moves an
anonymous page to the inactive list - this is a pretty good indication
that there are unused anonymous pages present which will be very likely
swapped out soon.
and, It is judged out of trouble at the fllowing situations.
o memory pressur
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