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Re: [RFC v2 PATCH 0/8] mm: mirrored memory support for page buddy allocations

Started byDave Hansen <dave.hansen@intel.com>
First post2015-06-29 17:20 +0200
Last post2015-06-30 04:50 +0200
Articles 4 — 2 participants

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  Re: [RFC v2 PATCH 0/8] mm: mirrored memory support for page buddy  allocations Dave Hansen <dave.hansen@intel.com> - 2015-06-29 17:20 +0200
    Re: [RFC v2 PATCH 0/8] mm: mirrored memory support for page buddy  allocations Xishi Qiu <qiuxishi@huawei.com> - 2015-06-30 03:40 +0200
      Re: [RFC v2 PATCH 0/8] mm: mirrored memory support for page buddy  allocations Dave Hansen <dave.hansen@intel.com> - 2015-06-30 04:00 +0200
        Re: [RFC v2 PATCH 0/8] mm: mirrored memory support for page buddy  allocations Xishi Qiu <qiuxishi@huawei.com> - 2015-06-30 04:50 +0200

#1173872 — Re: [RFC v2 PATCH 0/8] mm: mirrored memory support for page buddy allocations

FromDave Hansen <dave.hansen@intel.com>
Date2015-06-29 17:20 +0200
SubjectRe: [RFC v2 PATCH 0/8] mm: mirrored memory support for page buddy allocations
Message-ID<pGJ0K-6L7-13@gated-at.bofh.it>
On 06/26/2015 07:19 PM, Xishi Qiu wrote:
>  drivers/base/node.c      |  17 ++++---
>  fs/proc/meminfo.c        |   6 +++
>  include/linux/memblock.h |  29 ++++++++++--
>  include/linux/mmzone.h   |  10 ++++
>  include/linux/vmstat.h   |   2 +
>  mm/Kconfig               |   8 ++++
>  mm/memblock.c            |  33 +++++++++++--
>  mm/nobootmem.c           |   3 ++
>  mm/page_alloc.c          | 117 ++++++++++++++++++++++++++++++++++++-----------
>  mm/vmstat.c              |   4 ++
>  10 files changed, 190 insertions(+), 39 deletions(-)

Has there been any performance analysis done on this code?  I'm always
nervous when I see page_alloc.c churn.


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#1174172

FromXishi Qiu <qiuxishi@huawei.com>
Date2015-06-30 03:40 +0200
Message-ID<pGSGL-3PE-7@gated-at.bofh.it>
In reply to#1173872
On 2015/6/29 23:19, Dave Hansen wrote:

> On 06/26/2015 07:19 PM, Xishi Qiu wrote:
>>  drivers/base/node.c      |  17 ++++---
>>  fs/proc/meminfo.c        |   6 +++
>>  include/linux/memblock.h |  29 ++++++++++--
>>  include/linux/mmzone.h   |  10 ++++
>>  include/linux/vmstat.h   |   2 +
>>  mm/Kconfig               |   8 ++++
>>  mm/memblock.c            |  33 +++++++++++--
>>  mm/nobootmem.c           |   3 ++
>>  mm/page_alloc.c          | 117 ++++++++++++++++++++++++++++++++++++-----------
>>  mm/vmstat.c              |   4 ++
>>  10 files changed, 190 insertions(+), 39 deletions(-)
> 
> Has there been any performance analysis done on this code?  I'm always
> nervous when I see page_alloc.c churn.
> 

Not yet, which benchmark do you suggest?

Thanks,
Xishi Qiu

> 
> 
> .
> 



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#1174186

FromDave Hansen <dave.hansen@intel.com>
Date2015-06-30 04:00 +0200
Message-ID<pGT05-4c5-13@gated-at.bofh.it>
In reply to#1174172
On 06/29/2015 06:26 PM, Xishi Qiu wrote:
>> > Has there been any performance analysis done on this code?  I'm always
>> > nervous when I see page_alloc.c churn.
>> > 
> Not yet, which benchmark do you suggest?

mmtests is always a good place to start.  aim9.  I'm partial to
will-it-scale.


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#1174193

FromXishi Qiu <qiuxishi@huawei.com>
Date2015-06-30 04:50 +0200
Message-ID<pGTMu-5rN-7@gated-at.bofh.it>
In reply to#1174186
On 2015/6/30 9:52, Dave Hansen wrote:

> On 06/29/2015 06:26 PM, Xishi Qiu wrote:
>>>> Has there been any performance analysis done on this code?  I'm always
>>>> nervous when I see page_alloc.c churn.
>>>>
>> Not yet, which benchmark do you suggest?
> 
> mmtests is always a good place to start.  aim9.  I'm partial to
> will-it-scale.
> 

I see, thank you.

> 
> 
> .
> 



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