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Re: [PATCH 0/3 staging-next] android: Lowmemmorykiller task tree

From peter enderborg <peter.enderborg@sonymobile.com>
Newsgroups linux.kernel
Subject Re: [PATCH 0/3 staging-next] android: Lowmemmorykiller task tree
Date 2017-02-13 16:50 +0100
Message-ID <tar36-5BW-51@gated-at.bofh.it> (permalink)
References <t8X75-6JS-57@gated-at.bofh.it> <t9gCK-2aq-33@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 02/10/2017 11:27 AM, Michal Hocko wrote:
> [I have only now see this cover - it answers some of the questions I've
>  had to specific patches. It would be really great if you could use git
>  send-email to post patch series - it just does the right thing(tm)]
>
> On Thu 09-02-17 14:21:40, peter enderborg wrote:
>> Lowmemorykiller efficiency problem and a solution.
>>
>> Lowmemorykiller in android has a severe efficiency problem. The basic
>> problem is that the registered shrinker gets called very often without
>>  anything actually happening.
> Which is an inherent problem because lkml doesn't belong to shrinkers
> infrastructure.

Not really what this patch address.  I see it as a problem with shrinker
that there no slow-path-free (scan/count) where it should belong.
This patch address a specific problem where lot of cpu are wasted
in low memory conditions.

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[PATCH 0/3 staging-next] android: Lowmemmorykiller task tree peter enderborg <peter.enderborg@sonymobile.com> - 2017-02-09 14:40 +0100
  [PATCH 1/3 v2 staging-next] android: Collect statistics from  lowmemorykiller peter enderborg <peter.enderborg@sonymobile.com> - 2017-02-09 17:00 +0100
    Re: [PATCH 1/3 v2 staging-next] android: Collect statistics from  lowmemorykiller Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-09 21:40 +0100
      Re: [PATCH 1/3 v2 staging-next] android: Collect statistics from  lowmemorykiller peter enderborg <peter.enderborg@sonymobile.com> - 2017-02-10 08:20 +0100
  Re: [PATCH 0/3 staging-next] android: Lowmemmorykiller task tree Michal Hocko <mhocko@kernel.org> - 2017-02-10 11:30 +0100
    Re: [PATCH 0/3 staging-next] android: Lowmemmorykiller task tree peter enderborg <peter.enderborg@sonymobile.com> - 2017-02-13 16:50 +0100
      Re: [PATCH 0/3 staging-next] android: Lowmemmorykiller task tree Michal Hocko <mhocko@kernel.org> - 2017-02-20 11:30 +0100

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