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Date: Wed, 26 Jun 2013 16:50:32 +0900
Message-ID: <CAH9JG2WXMVQPgB7RFW_NLjOwMRaMdoNfjauWdv7KeYsHWkb7eQ@mail.gmail.com>
Subject: Re: [PATCH] memcg: add interface to specify thresholds of vmpressure
From: Kyungmin Park <kmpark@infradead.org>
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To: Minchan Kim <minchan@kernel.org>
Cc: Hyunhee Kim <hyunhee.kim@samsung.com>, Michal Hocko <mhocko@suse.cz>, Anton Vorontsov <anton@enomsg.org>, linux-mm@kvack.org, akpm@linux-foundation.org, rob@landley.net, kamezawa.hiroyu@jp.fujitsu.com, hannes@cmpxchg.org, rientjes@google.com, kirill@shutemov.name

On Wed, Jun 26, 2013 at 4:39 PM, Minchan Kim <minchan@kernel.org> wrote:
> On Sat, Jun 22, 2013 at 04:34:34PM +0900, Hyunhee Kim wrote:
>> Memory pressure is calculated based on scanned/reclaimed ratio. The higher
>> the value, the more number unsuccessful reclaims there were. These thresholds
>> can be specified when each event is registered by writing it next to the
>> string of level. Default value is 60 for "medium" and 95 for "critical"
>>
>> Signed-off-by: Hyunhee Kim <hyunhee.kim@samsung.com>
>> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
>
> As I mentioned eariler thread, it's not a good idea to expose each level's
> raw value to user space. If it's a problem, please fix default vaule and
> send a patch with number to convince us although I'm not sure we can get
> a stable number.
that's reason to send this patch, can we make a reasonable value to
cover all cases?
which number are satified for all person. I really wonder it.

Thank you,
Kyungmin Park

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