From: Michal Hocko <mhocko@kernel.org>
To: Raymond Jennings <shentino@gmail.com>
Cc: Linux Memory Management List <linux-mm@kvack.org>
Subject: Re: Silly question about dethrottling
Date: Mon, 5 Dec 2016 08:05:20 +0100 [thread overview]
Message-ID: <20161205070519.GA30765@dhcp22.suse.cz> (raw)
In-Reply-To: <CAGDaZ_r3-DxOEsGdE2y1UsS_-=UR-Qc0CsouGtcCgoXY3kVotQ@mail.gmail.com>
On Sun 04-12-16 13:56:54, Raymond Jennings wrote:
> I have an application that is generating HUGE amounts of dirty data.
> Multiple GiB worth, and I'd like to allow it to fill at least half of my
> RAM.
Could you be more specific why and what kind of problem you are trying
to solve?
> I already have /proc/sys/vm/dirty_ratio pegged at 80 and the background one
> pegged at 50. RAM is 32GiB.
There is also dirty_bytes alternative which is an absolute numer.
> it appears to be butting heads with clean memory. How do I tell my system
> to prefer using RAM to soak up writes instead of caching?
I am not sure I understand. Could you be more specific about what is the
actual problem? Is it possible that your dirty data is already being
flushed and that is wy you see a clean cache?
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2016-12-05 7:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-04 21:56 Raymond Jennings
2016-12-05 7:05 ` Michal Hocko [this message]
2016-12-05 9:15 ` Raymond Jennings
2016-12-05 9:25 ` Michal Hocko
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