lkml.org 
[lkml]   [2017]   [Oct]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v9 06/12] mm: zero struct pages during initialization
From
Date


On 10/03/2017 09:08 AM, Michal Hocko wrote:
> On Wed 20-09-17 16:17:08, Pavel Tatashin wrote:
>> Add struct page zeroing as a part of initialization of other fields in
>> __init_single_page().
>>
>> This single thread performance collected on: Intel(R) Xeon(R) CPU E7-8895
>> v3 @ 2.60GHz with 1T of memory (268400646 pages in 8 nodes):
>>
>> BASE FIX
>> sparse_init 11.244671836s 0.007199623s
>> zone_sizes_init 4.879775891s 8.355182299s
>> --------------------------
>> Total 16.124447727s 8.362381922s
>
> Hmm, this is confusing. This assumes that sparse_init doesn't zero pages
> anymore, right? So these number depend on the last patch in the series?

Correct, without the last patch sparse_init time won't change.

Pasha

\
 
 \ /
  Last update: 2017-10-03 17:24    [W:0.076 / U:2.296 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site