From: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
To: Mauricio Lin <mauriciolin@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: User space out of memory approach
Date: Mon, 10 Jan 2005 17:20:13 -0200 [thread overview]
Message-ID: <20050110192012.GA18531@logos.cnet> (raw)
In-Reply-To: <3f250c71050110134337c08ef0@mail.gmail.com>
On Mon, Jan 10, 2005 at 05:43:23PM -0400, Mauricio Lin wrote:
> Hi all,
>
> We have done a comparison between the kernel version and user space
> version and apparently the behavior is similar. You can also get this
> patch and module to test it and compare with kernel OOM Killer. Here
> goes a patch and a module that moves the kernel space OOM Killer
> algorithm to user space. Let us know about your ideas.
No comments on the code itself - It is interesting to have certain pids "not selectable" by
the OOM killer. Patches which have similar funcionality have been floating around.
The userspace OOM killer is dangerous though. You have to guarantee that allocations
will NOT happen until the OOM killer is executed and the killed process is dead and
has its pages freed - allocations under OOM can cause deadlocks.
"OOM-killer-in-userspace" is unreliable, not sure if its worth the effort making
it reliable (mlock it, flagged as PF_MEMALLOC, etc).
next prev parent reply other threads:[~2005-01-10 22:28 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-10 21:43 User space out of memory approach Mauricio Lin
2005-01-10 19:20 ` Marcelo Tosatti [this message]
2005-01-10 19:39 ` Marcelo Tosatti
2005-01-10 23:01 ` Mauricio Lin
2005-01-10 22:40 ` Edjard Souza Mota
2005-01-10 20:05 ` Marcelo Tosatti
2005-01-10 23:17 ` Edjard Souza Mota
2005-01-10 23:18 ` Edjard Souza Mota
2005-01-10 23:24 ` Mauricio Lin
2005-01-10 23:30 ` Mauricio Lin
2005-01-11 7:47 ` Marcelo Tosatti
2005-01-11 0:35 ` Thomas Gleixner
2005-01-11 2:03 ` Edjard Souza Mota
2005-01-11 8:44 ` Thomas Gleixner
2005-01-11 8:58 ` Andrea Arcangeli
2005-01-11 7:48 ` Marcelo Tosatti
2005-01-11 9:08 ` Andrew Morton
2005-01-11 9:19 ` Andrea Arcangeli
2005-01-11 9:27 ` Andrew Morton
2005-01-11 9:20 ` Edjard Souza Mota
2005-01-11 9:30 ` Thomas Gleixner
2005-01-11 9:56 ` Andrea Arcangeli
2005-01-11 10:05 ` Edjard Souza Mota
2005-01-11 10:39 ` Thomas Gleixner
2005-01-11 10:44 ` Andrea Arcangeli
2005-01-11 14:56 ` Edjard Souza Mota
2005-01-11 15:27 ` Ilias Biris
2005-01-11 10:00 ` Edjard Souza Mota
2005-01-11 10:36 ` Thomas Gleixner
2005-01-11 16:32 ` Alan Cox
2005-01-11 19:16 ` Ilias Biris
2005-01-11 20:46 ` Ilias Biris
2005-01-11 20:57 ` Thomas Gleixner
2005-01-12 9:31 ` Edjard Souza Mota
2005-01-12 11:19 ` Thomas Gleixner
2005-01-12 12:12 ` Edjard Souza Mota
2005-01-13 15:36 ` Alan Cox
2005-01-16 10:06 ` Edjard Souza Mota
2005-01-16 21:10 ` Alan Cox
2005-01-17 10:16 ` Thomas Gleixner
2005-01-11 21:35 ` Denis Vlasenko
2005-01-11 20:40 ` Thomas Gleixner
2005-01-11 7:42 ` Marcelo Tosatti
2005-01-11 10:51 ` Thomas Gleixner
2005-01-11 11:03 ` Andrea Arcangeli
2005-01-11 8:38 ` Andrea Arcangeli
2005-01-21 21:27 ` Mauricio Lin
2005-01-21 21:45 ` Mauricio Lin
2005-01-22 3:32 ` Andrea Arcangeli
2005-01-25 21:13 ` Mauricio Lin
2005-01-25 21:39 ` Thomas Gleixner
2005-01-26 0:11 ` Mauricio Lin
2005-01-26 0:49 ` Andrea Arcangeli
2005-01-26 14:03 ` Mauricio Lin
2005-01-27 18:54 ` Mauricio Lin
2005-01-27 22:11 ` Andrea Arcangeli
2005-01-27 22:29 ` Andrew Morton
2005-01-27 22:58 ` Andrea Arcangeli
2005-01-27 23:35 ` Andrew Morton
2005-01-28 0:15 ` Andrea Arcangeli
2005-01-28 13:58 ` Mauricio Lin
2005-01-28 15:21 ` Mauricio Lin
2005-01-28 15:29 ` Andrea Arcangeli
2005-01-26 7:26 ` Thomas Gleixner
2005-01-22 3:04 ` Andrea Arcangeli
[not found] <fa.lcmt90h.1j1scpn@ifi.uio.no>
[not found] ` <fa.ht4gei4.1g5odia@ifi.uio.no>
2005-01-16 16:28 ` Bodo Eggert
2005-01-18 13:15 ` Edjard Souza Mota
2005-01-19 6:18 ` Bodo Eggert
2005-01-20 3:20 ` Edjard Souza Mota
2005-01-20 5:00 ` Bodo Eggert
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