From: Jamie Lokier <jamie@shareable.org>
To: Arjan van de Ven <arjanv@redhat.com>
Cc: Luca Veraldi <luca.veraldi@katamail.com>,
alexander.riesen@synopsys.COM,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Efficient IPC mechanism on Linux
Date: Wed, 10 Sep 2003 11:37:52 +0100 [thread overview]
Message-ID: <20030910103752.GC21313@mail.jlokier.co.uk> (raw)
In-Reply-To: <20030910120729.C14352@devserv.devel.redhat.com>
Arjan van de Ven wrote:
> > I have just done a measurement on a 366MHz PII Celeron
>
> This test is sort of the worst case against my argument:
> 1) It's a cpu with low memory bandwidth
> 2) It's a 1 CPU system
> 3) It's a pII not pIV; the pII is way more efficient cycle wise
> for pagetable operations
I thought that later generation CPUs were supposed to have lower
memory bandwidth relative to the CPU core, so CPU operations are
better than copying. Hence all the fancy special memory instructions,
to work around that.
Not that it matters. I think the 366 Celeron is typical of a lot of
computers being used today. I still use it every day, after all.
-- Jaie
next prev parent reply other threads:[~2003-09-10 10:38 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-09 17:30 Luca Veraldi
2003-09-09 21:17 ` Alan Cox
2003-09-09 21:57 ` Luca Veraldi
2003-09-09 23:11 ` Alan Cox
2003-09-10 9:04 ` Luca Veraldi
2003-09-10 12:56 ` Alan Cox
[not found] ` <20030909175821.GL16080@Synopsys.COM>
[not found] ` <001d01c37703$8edc10e0$36af7450@wssupremo>
[not found] ` <20030910064508.GA25795@Synopsys.COM>
2003-09-10 9:18 ` Luca Veraldi
2003-09-10 9:23 ` Arjan van de Ven
2003-09-10 9:40 ` Luca Veraldi
2003-09-10 9:44 ` Arjan van de Ven
2003-09-10 10:09 ` Luca Veraldi
2003-09-10 10:14 ` Arjan van de Ven
2003-09-10 10:25 ` Luca Veraldi
2003-09-12 18:41 ` Timothy Miller
2003-09-12 19:05 ` Luca Veraldi
2003-09-12 22:37 ` Alan Cox
2003-09-10 12:50 ` Alan Cox
2003-09-10 19:16 ` Shawn
2003-09-10 20:05 ` Rik van Riel
2003-09-17 9:52 ` Rik's list of CS challenges Terje Eggestad
2003-09-17 13:40 ` Alan Cox
2003-09-18 8:26 ` Helge Hafting
2003-09-10 12:47 ` Efficient IPC mechanism on Linux Alan Cox
2003-09-10 13:56 ` Luca Veraldi
2003-09-10 15:59 ` Alan Cox
2003-09-10 9:52 ` Jamie Lokier
2003-09-10 10:07 ` Arjan van de Ven
2003-09-10 10:17 ` Luca Veraldi
2003-09-10 10:37 ` Jamie Lokier [this message]
2003-09-10 10:41 ` Arjan van de Ven
2003-09-10 10:54 ` Luca Veraldi
2003-09-10 10:54 ` Arjan van de Ven
2003-09-10 11:16 ` Nick Piggin
2003-09-10 11:30 ` Luca Veraldi
2003-09-10 11:44 ` Nick Piggin
2003-09-10 12:14 ` Luca Veraldi
2003-09-10 12:42 ` Alan Cox
2003-09-10 10:11 ` Luca Veraldi
2003-09-10 19:24 ` Pavel Machek
2003-09-10 19:40 ` Jamie Lokier
2003-09-10 21:35 ` Pavel Machek
2003-09-10 22:06 ` Jamie Lokier
2003-09-10 11:52 ` Alex Riesen
2003-09-10 12:14 ` Luca Veraldi
2003-09-10 12:11 ` Alex Riesen
2003-09-10 12:29 ` Luca Veraldi
2003-09-10 12:28 ` Alex Riesen
2003-09-10 12:36 ` Luca Veraldi
2003-09-10 12:36 ` Alex Riesen
2003-09-10 13:33 ` Gábor Lénárt
2003-09-10 14:04 ` Luca Veraldi
2003-09-10 14:21 ` Stewart Smith
2003-09-10 14:39 ` Luca Veraldi
2003-09-10 16:59 ` Andrea Arcangeli
2003-09-10 17:05 ` Andrea Arcangeli
2003-09-10 17:21 ` Luca Veraldi
2003-09-10 17:41 ` Andrea Arcangeli
2003-09-10 17:39 ` Martin Konold
2003-09-10 18:01 ` Andrea Arcangeli
2003-09-10 18:05 ` Martin Konold
2003-09-10 18:31 ` Chris Friesen
2003-09-10 18:08 ` Inappropriate signatures Larry McVoy
2003-09-10 18:52 ` Jamie Lokier
2003-09-10 19:54 ` rsync head? [was inappropriate signatures] Joe Perches
2003-09-13 15:39 ` Inappropriate signatures Pavel Machek
2003-09-13 16:49 ` Larry McVoy
2003-09-09 18:59 Efficient IPC mechanism on Linux Luca Veraldi
2003-09-09 22:15 Luca Veraldi
[not found] <F71B37536F3B3D4FA521FEC7FCA17933164A@twinsrv.twinox.se>
2003-09-10 10:36 ` Luca Veraldi
[not found] <E19x3el-0002Fc-Rj@phoenix.hadiko.de>
2003-09-10 12:16 ` Luca Veraldi
2003-09-10 14:53 ` Larry McVoy
[not found] <fa.h06p421.1s00ojt@ifi.uio.no>
[not found] ` <fa.gc37hsp.34id89@ifi.uio.no>
[not found] ` <E19x47V-0002JG-J8@phoenix.hadiko.de>
2003-09-10 12:45 ` Luca Veraldi
[not found] <u9j3.1VB.27@gated-at.bofh.it>
[not found] ` <u9j3.1VB.29@gated-at.bofh.it>
[not found] ` <u9j3.1VB.31@gated-at.bofh.it>
[not found] ` <u9j3.1VB.25@gated-at.bofh.it>
[not found] ` <ubNY.5Ma.19@gated-at.bofh.it>
[not found] ` <uc79.6lg.13@gated-at.bofh.it>
[not found] ` <uc7d.6lg.23@gated-at.bofh.it>
[not found] ` <uch0.6zx.17@gated-at.bofh.it>
[not found] ` <ucqs.6NC.3@gated-at.bofh.it>
[not found] ` <ucqy.6NC.19@gated-at.bofh.it>
[not found] ` <udmB.8eZ.15@gated-at.bofh.it>
[not found] ` <udPF.BD.11@gated-at.bofh.it>
[not found] ` <3F5F37CD.6060808@softhome.net>
2003-09-10 15:28 ` Luca Veraldi
2003-09-10 18:41 Manfred Spraul
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