From: Andrea Arcangeli <andrea@suse.de>
To: "Martin J. Bligh" <mbligh@aracnet.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: -mmX 4G patches feedback [numbers: how much performance impact]
Date: Fri, 9 Apr 2004 01:49:01 +0200 [thread overview]
Message-ID: <20040408234901.GC31667@dualathlon.random> (raw)
In-Reply-To: <39780000.1081467757@flay>
On Thu, Apr 08, 2004 at 04:42:37PM -0700, Martin J. Bligh wrote:
> but still not perfect. Hmm. I'll go think about it ;-)
nothing is perfect anyways ;), if you've an implementation it'd be very
interesting to see a result in the kernel compile with -j with mem=800m,
that should be close to a real life worst case. Then we'll see if the
setup after execve is slowed down measurably, it's hard to tell, but we
know there's a chance since you measure significant slowdown from
pte-highmem on very highmem machines with short lived tasks. btw, note that
if the task isn't short lived, good apps should flood with mmap either (at
least on 64bit ;)
next prev parent reply other threads:[~2004-04-08 23:49 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-05 16:36 -mmX 4G patches feedback Eric Whiting
2004-04-05 17:46 ` Andrea Arcangeli
2004-04-05 21:35 ` Eric Whiting
2004-04-05 22:16 ` Andrea Arcangeli
2004-04-06 11:55 ` -mmX 4G patches feedback [numbers: how much performance impact] Ingo Molnar
2004-04-06 14:49 ` Eric Whiting
2004-04-06 15:59 ` Andrea Arcangeli
2004-04-06 16:13 ` Arjan van de Ven
2004-04-06 16:39 ` Andrea Arcangeli
2004-04-06 17:24 ` Ingo Molnar
2004-04-06 17:57 ` Andrea Arcangeli
2004-04-07 22:54 ` Martin J. Bligh
2004-04-07 22:50 ` Andrea Arcangeli
2004-04-06 19:25 ` Ingo Molnar
2004-04-06 20:25 ` Andrea Arcangeli
2004-04-07 6:03 ` Andrea Arcangeli
2004-04-07 6:46 ` Ingo Molnar
2004-04-07 7:23 ` Andrea Arcangeli
2004-04-07 8:23 ` Ingo Molnar
2004-04-07 21:35 ` Andrea Arcangeli
2004-04-07 17:27 ` Andrea Arcangeli
2004-04-07 7:25 ` Ingo Molnar
2004-04-07 21:39 ` Andrea Arcangeli
2004-04-07 22:58 ` Martin J. Bligh
2004-04-07 23:01 ` Andrea Arcangeli
2004-04-07 23:21 ` Martin J. Bligh
2004-04-07 23:18 ` Andrea Arcangeli
2004-04-07 23:34 ` Martin J. Bligh
2004-04-08 0:18 ` Andrea Arcangeli
2004-04-08 6:24 ` Martin J. Bligh
2004-04-08 21:59 ` Andrea Arcangeli
2004-04-08 22:19 ` Martin J. Bligh
2004-04-08 22:19 ` Andrea Arcangeli
2004-04-08 23:14 ` Martin J. Bligh
2004-04-08 23:22 ` Andrea Arcangeli
2004-04-08 23:42 ` Martin J. Bligh
2004-04-08 23:49 ` Andrea Arcangeli [this message]
2004-04-07 21:19 ` -mmX 4G patches feedback Martin J. Bligh
2004-04-07 21:49 ` Andrea Arcangeli
2004-04-06 17:59 -mmX 4G patches feedback [numbers: how much performance impact] Manfred Spraul
2004-04-06 18:41 ` Andrea Arcangeli
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