From: Rik van Riel <riel@redhat.com>
To: Andrea Arcangeli <andrea@suse.de>
Cc: Rajesh Venkatasubramanian <vrajesh@umich.edu>,
akpm@osdl.org, torvalds@osdl.org, hugh@veritas.com,
mbligh@aracnet.com, mingo@elte.hu, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: Re: [RFC][PATCH 1/3] radix priority search tree - objrmap complexity fix
Date: Sun, 21 Mar 2004 21:32:46 -0500 (EST) [thread overview]
Message-ID: <Pine.LNX.4.44.0403212131100.20045-100000@chimarrao.boston.redhat.com> (raw)
In-Reply-To: <20040322004652.GF3649@dualathlon.random>
On Mon, 22 Mar 2004, Andrea Arcangeli wrote:
> It would be curious to test it after changing the return 1 to return 0
> in the page_referenced trylock failures?
In the case of a trylock failure, it should probably return a
random value. For heavily page faulting multithreaded apps,
that would mean we'd tend towards random replacement, instead
of FIFO.
Then again, the locking problems shouldn't be too bad in most
cases. If you're swapping the program will be waiting on IO
and if it's not waiting on IO there's no problem.
--
"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it." - Brian W. Kernighan
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next prev parent reply other threads:[~2004-03-22 2:32 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.44.0403150527400.28579-100000@localhost.localdomain>
2004-03-21 22:10 ` Rajesh Venkatasubramanian
2004-03-21 22:12 ` [RFC][PATCH 2/3] Dave & Hugh's objrmap patch Rajesh Venkatasubramanian
2004-03-21 22:13 ` [RFC][PATCH 3/3] Covert objrmap to use prio_tree Rajesh Venkatasubramanian
2004-03-21 22:26 ` URL typo Rajesh Venkatasubramanian
2004-03-22 0:46 ` [RFC][PATCH 1/3] radix priority search tree - objrmap complexity fix Andrea Arcangeli
2004-03-22 2:32 ` Rik van Riel [this message]
2004-03-22 3:49 ` Rajesh Venkatasubramanian
2004-03-22 4:02 ` Rik van Riel
2004-03-25 22:59 ` Andrea Arcangeli
2004-03-26 4:06 ` Rajesh Venkatasubramanian
2004-03-26 7:53 ` Andrea Arcangeli
2004-03-26 15:43 ` Rajesh Venkatasubramanian
2004-03-26 17:58 ` Andrea Arcangeli
2004-03-27 19:51 ` Rajesh Venkatasubramanian
2004-03-29 17:22 ` Andrea Arcangeli
2004-03-29 17:50 ` Rajesh Venkatasubramanian
2004-03-29 18:01 ` Andrea Arcangeli
2004-03-29 20:40 ` Andrew Morton
2004-03-29 22:24 ` Hugh Dickins
2004-03-29 22:54 ` Andrea Arcangeli
2004-03-29 23:08 ` William Lee Irwin III
2004-03-29 22:39 ` Andrea Arcangeli
2004-03-29 22:42 ` Andrew Morton
2004-03-31 15:07 ` Andrea Arcangeli
2004-03-31 15:26 ` Andrea Arcangeli
2004-03-31 16:45 ` Hugh Dickins
2004-03-31 17:28 ` Andrea Arcangeli
2004-04-01 0:45 ` Andrea Arcangeli
2004-04-01 1:22 ` Andrew Morton
2004-04-01 1:26 ` Andrea Arcangeli
2004-04-01 1:51 ` Andrew Morton
2004-04-01 2:01 ` Andrea Arcangeli
2004-04-01 5:05 ` Hugh Dickins
2004-04-01 13:35 ` Andrea Arcangeli
2004-04-01 15:09 ` Andrea Arcangeli
2004-04-01 15:15 ` Andrea Arcangeli
2004-04-02 0:15 ` Andrea Arcangeli
2004-04-02 0:52 ` Andrew Morton
2004-04-02 1:06 ` Andrea Arcangeli
2004-04-02 1:03 ` Hugh Dickins
2004-04-02 1:16 ` Andrea Arcangeli
2004-04-02 1:36 ` Andrew Morton
2004-04-02 2:00 ` Andrea Arcangeli
2004-04-02 2:08 ` Andrew Morton
2004-04-02 2:22 ` Andrea Arcangeli
2004-04-02 6:05 ` Christoph Hellwig
2004-04-02 7:07 ` Paul Mackerras
2004-04-02 7:11 ` Christoph Hellwig
2004-04-02 15:28 ` Andrea Arcangeli
2004-04-02 15:22 ` Andrea Arcangeli
2004-04-02 15:27 ` Christoph Hellwig
2004-04-02 15:38 ` Andrea Arcangeli
2004-04-02 15:45 ` Andrea Arcangeli
2004-04-02 9:43 ` Christoph Hellwig
2004-04-02 10:21 ` Marc-Christian Petersen
2004-04-02 10:55 ` Hugh Dickins
2004-04-02 16:46 ` Andrea Arcangeli
2004-04-02 18:59 ` Christoph Hellwig
2004-04-02 19:29 ` Andrea Arcangeli
2004-04-02 19:54 ` Christoph Hellwig
2004-04-02 20:35 ` Andrea Arcangeli
2004-04-03 8:40 ` Christoph Hellwig
2004-04-03 15:20 ` Andrea Arcangeli
2004-04-03 15:59 ` Andrea Arcangeli
2004-04-03 17:02 ` Andrea Arcangeli
2004-04-05 9:59 ` Christoph Hellwig
2004-04-05 12:11 ` Christoph Hellwig
2004-04-05 16:08 ` Andrea Arcangeli
2004-04-06 4:22 ` Andrea Arcangeli
2004-04-06 4:43 ` Andrew Morton
2004-04-06 5:14 ` Christoph Hellwig
2004-04-06 21:54 ` Andrea Arcangeli
2004-04-07 1:39 ` Nathan Scott
2004-04-06 5:16 ` Christoph Hellwig
2004-04-06 16:01 ` Andrea Arcangeli
2004-04-07 1:33 ` Nathan Scott
2004-04-03 17:40 ` Andrea Arcangeli
2004-04-03 20:02 ` Andrew Morton
2004-04-03 23:27 ` Andrea Arcangeli
2004-04-03 23:46 ` Andrew Morton
2004-04-04 0:40 ` Andrea Arcangeli
2004-04-02 20:13 ` Pavel Machek
2004-04-02 21:42 ` Andrea Arcangeli
2004-04-02 21:45 ` Pavel Machek
2004-04-02 21:49 ` Andrea Arcangeli
2004-03-29 18:12 ` Hugh Dickins
2004-03-29 18:20 ` Andrea Arcangeli
2004-03-29 18:38 ` Christoph Hellwig
2004-04-05 3:14 ` Rajesh Venkatasubramanian
2004-04-05 4:42 ` Andrea Arcangeli
2004-03-26 12:26 ` William Lee Irwin III
2004-03-26 19:18 ` Andrea Arcangeli
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