Re: [PATCH] pipe: limit the per-user amount of pages allocated in pipes

From	Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Newsgroups	linux.kernel
Subject	Re: [PATCH] pipe: limit the per-user amount of pages allocated in pipes
Date	2016-01-10 15:50 +0100
Message-ID	<qPptD-5rE-13@gated-at.bofh.it> (permalink)
References	<qKGEN-38h-3@gated-at.bofh.it> <qPkaC-28F-13@gated-at.bofh.it> <qPlzJ-2US-29@gated-at.bofh.it>
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Willy Tarreau wrote:
> In a shared environment, limiting to 256
> processes and 1024 FDs per process, you end up with "only" 1 GB of RAM which
> is more reasonable a on large shared system.

OK. I see no problems if we change example to something like

  With a user enforcing the FD limit to 262144, this results in
  1024 * 64kB + (26214464 - 1024) * 4kB = 1084MB.

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Re: [PATCH] pipe: limit the per-user amount of pages allocated in  pipes Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-01-10 10:10 +0100
  Re: [PATCH] pipe: limit the per-user amount of pages allocated in pipes Willy Tarreau <w@1wt.eu> - 2016-01-10 11:40 +0100
    Re: [PATCH] pipe: limit the per-user amount of pages allocated in pipes Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> - 2016-01-10 15:50 +0100

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