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From: Thomas Gleixner <tglx@linutronix.de>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Edjard Souza Mota <edjard@gmail.com>,
	Marcelo Tosatti <marcelo.tosatti@cyclades.com>,
	Mauricio Lin <mauriciolin@gmail.com>,
	LKML <linux-kernel@vger.kernel.org>,
	Andrew Morton <akpm@osdl.org>, Andrea Arcangeli <andrea@suse.de>
Subject: Re: User space out of memory approach
Date: Tue, 11 Jan 2005 21:40:47 +0100	[thread overview]
Message-ID: <1105476047.17853.120.camel@tglx.tec.linutronix.de> (raw)
In-Reply-To: <1105461106.16168.41.camel@localhost.localdomain>

On Tue, 2005-01-11 at 16:32 +0000, Alan Cox wrote:
> On Maw, 2005-01-11 at 08:44, Thomas Gleixner wrote:
> > I consider the invocation of out_of_memory in the first place. This is
> > the real root of the problems. The ranking is a different playground.
> > Your solution does not solve
> > - invocation madness
> > - reentrancy protection
> > - the ugly mess of timers, counters... in out_of_memory, which aren't
> > neccecary at all
> > 
> > This must be solved first in a proper way, before we talk about ranking.
> 
> echo "2" >/proc/sys/vm/overcommit_memory
> 
> End of problem (except for extreme cases) and with current 2.6.10-bk
> (and -ac because I pulled the patch back into -ac) also for most extreme
> cases as Andries pre-reserves the stack address spaces.

Maybe for you it's end of problem, but I still can reproduce the weird
behaviour with 2.6.10-bk with the tests I posted before. I don't buy end
of problem proclamations, as long as I can proove the contrary.

The only working patch so far is Andrea's fix of the invocation, which
also solves the reentrancy problem, gets rid of the timer,counter hack
and my small contribution to the selection algorithm.

tglx



  parent reply	other threads:[~2005-01-11 20:41 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
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 [this message]
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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