Hi Mel and Kosaki,
Thank you for posting patches.
I tested your patches. And following table shows time of onlining
a memory section.
Amount of memory| 128GB | 192GB | 256GB|
linux-3.12-rc7 | 24.3 | 30.2 | 45.6 |
Kosaki's first
Nit. I would like to add following hunk. This is just nit because moving
reserve pageblock is extreme rare.
if (block_migratetype == MIGRATE_RESERVE) {
+ found++;
set_pageblock_migratetype(page, MIGRATE_MOVABLE);
On Wed, Oct 30, 2013 at 04:19:07PM -0400, KOSAKI Motohiro wrote:
> >@@ -3926,11 +3929,11 @@ static void setup_zone_migrate_reserve(struct zone
> >*zone)
> > /*
> > * Reserve blocks are generally in place to help high-order atomic
> > * allocations that are short-lived. A min_free_kby
@@ -3926,11 +3929,11 @@ static void setup_zone_migrate_reserve(struct zone
*zone)
/*
* Reserve blocks are generally in place to help high-order atomic
* allocations that are short-lived. A min_free_kbytes value that
-* would result in more than 2 reserve blocks f
(10/30/13 11:19 AM), Mel Gorman wrote:
On Wed, Oct 23, 2013 at 05:01:32PM -0400, kosaki.motoh...@gmail.com wrote:
From: KOSAKI Motohiro
Yasuaki Ithimatsu reported memory hot-add spent more than 5 _hours_
on 9TB memory machine and we found out setup_zone_migrate_reserve
spnet >90% time.
The pr
On Wed, Oct 23, 2013 at 05:01:32PM -0400, kosaki.motoh...@gmail.com wrote:
> From: KOSAKI Motohiro
>
> Yasuaki Ithimatsu reported memory hot-add spent more than 5 _hours_
> on 9TB memory machine and we found out setup_zone_migrate_reserve
> spnet >90% time.
>
> The problem is, setup_zone_migrate
From: KOSAKI Motohiro
Yasuaki Ithimatsu reported memory hot-add spent more than 5 _hours_
on 9TB memory machine and we found out setup_zone_migrate_reserve
spnet >90% time.
The problem is, setup_zone_migrate_reserve scan all pageblock
unconditionally, but it is only necessary number of reserved
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