* Re: [RFC PATCH] mm: numa: adjust hinting fault record if page is migrated
[not found] <20130914115335.3AA33428001@webmail.sinamail.sina.com.cn>
@ 2013-09-14 15:55 ` Rik van Riel
2013-09-15 1:11 ` Hillf Danton
0 siblings, 1 reply; 2+ messages in thread
From: Rik van Riel @ 2013-09-14 15:55 UTC (permalink / raw)
To: dhillf; +Cc: Mel Gorman, Andrea Arcangeli, linux-kernel, linux-mm,
Hillf Danton
On 09/14/2013 07:53 AM, Hillf Danton wrote:
> After page A on source node is migrated to page B on target node, hinting
> fault is recorded on the target node for B. On the source node there is
> another record for A, since a two-stage filter is used when migrating pages.
>
> Page A is no longer used after migration, so we have to erase its record.
What kind of performance changes have you observed with this patch?
What benchmarks have you run, and on what kind of systems?
--
All rights reversed
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [RFC PATCH] mm: numa: adjust hinting fault record if page is migrated
2013-09-14 15:55 ` [RFC PATCH] mm: numa: adjust hinting fault record if page is migrated Rik van Riel
@ 2013-09-15 1:11 ` Hillf Danton
0 siblings, 0 replies; 2+ messages in thread
From: Hillf Danton @ 2013-09-15 1:11 UTC (permalink / raw)
To: Rik van Riel; +Cc: dhillf, Mel Gorman, Andrea Arcangeli, linux-kernel, linux-mm
Hello Rik
On Sat, Sep 14, 2013 at 11:55 PM, Rik van Riel <riel@redhat.com> wrote:
> On 09/14/2013 07:53 AM, Hillf Danton wrote:
>> After page A on source node is migrated to page B on target node, hinting
>> fault is recorded on the target node for B. On the source node there is
>> another record for A, since a two-stage filter is used when migrating pages.
>>
>> Page A is no longer used after migration, so we have to erase its record.
>
> What kind of performance changes have you observed with this patch?
>
> What benchmarks have you run, and on what kind of systems?
>
Due to no NUMA box, I can not answer you now.
I will try best to borrow one next Monday.
Thanks
Hillf
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2013-09-15 1:11 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
[not found] <20130914115335.3AA33428001@webmail.sinamail.sina.com.cn>
2013-09-14 15:55 ` [RFC PATCH] mm: numa: adjust hinting fault record if page is migrated Rik van Riel
2013-09-15 1:11 ` Hillf Danton
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox