From: "H. Peter Anvin" <hpa@transmeta.com>
To: Matti Aarnio <matti.aarnio@zmailer.org>
Cc: Linus Torvalds <torvalds@transmeta.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Intel P6 vs P7 system call performance
Date: Tue, 17 Dec 2002 12:10:38 -0800 [thread overview]
Message-ID: <3DFF84BE.6010009@transmeta.com> (raw)
In-Reply-To: <20021217200749.GB32122@mea-ext.zmailer.org>
Matti Aarnio wrote:
> (cutting down To:/Cc:)
>
> On Tue, Dec 17, 2002 at 11:43:57AM -0800, H. Peter Anvin wrote:
>
>>Linus Torvalds wrote:
>>
>>>The thing is, gettimeofday() isn't _that_ special. It's just not worth a
>>>vsyscall of it's own, I feel. Where do you stop? Do we do getpid() too?
>>>Just because we can?
>>
>>getpid() could be implemented in userspace, but not via vsyscalls
>>(instead it could be passed in the ELF data area at process start.)
>
>
> After fork() or clone() ?
> If we had only spawn(), and some separate way to start threads...
>
fork() and clone() would have to return the self-pid as an auxilliary
return value. This, of course, is getting rather fuggly.
Anything that cares caches getpid() anyway.
-hpa
next prev parent reply other threads:[~2002-12-17 20:02 UTC|newest]
Thread overview: 304+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-09 8:30 Intel P6 vs P7 system call performance Mike Hayward
2002-12-09 15:40 ` erich
2002-12-09 17:48 ` Linus Torvalds
2002-12-09 19:36 ` Dave Jones
2002-12-09 19:46 ` H. Peter Anvin
2002-12-28 20:37 ` Ville Herva
2002-12-29 2:05 ` Christian Leber
2002-12-30 18:22 ` Christian Leber
2002-12-30 21:22 ` Linus Torvalds
2002-12-30 11:29 ` Dave Jones
2002-12-17 0:47 ` Linus Torvalds
2002-12-17 1:03 ` Dave Jones
2002-12-17 2:36 ` Linus Torvalds
2002-12-17 5:55 ` Linus Torvalds
2002-12-17 6:09 ` Linus Torvalds
2002-12-17 6:18 ` Linus Torvalds
2002-12-19 14:03 ` Shuji YAMAMURA
2002-12-17 6:19 ` GrandMasterLee
2002-12-17 6:43 ` dean gaudet
2002-12-17 16:50 ` Linus Torvalds
2002-12-17 19:11 ` H. Peter Anvin
2002-12-17 21:39 ` Benjamin LaHaise
2002-12-17 21:41 ` H. Peter Anvin
2002-12-17 21:53 ` Benjamin LaHaise
2002-12-18 23:53 ` Pavel Machek
2002-12-19 22:18 ` H. Peter Anvin
2002-12-19 22:21 ` Pavel Machek
2002-12-19 22:23 ` H. Peter Anvin
2002-12-19 22:26 ` Pavel Machek
2002-12-19 22:30 ` H. Peter Anvin
2002-12-19 22:34 ` Pavel Machek
2002-12-19 22:36 ` H. Peter Anvin
2002-12-17 19:12 ` H. Peter Anvin
2002-12-17 19:26 ` Martin J. Bligh
2002-12-17 20:51 ` Alan Cox
2002-12-17 20:16 ` H. Peter Anvin
2002-12-17 20:49 ` Alan Cox
2002-12-17 20:12 ` H. Peter Anvin
2002-12-17 9:45 ` Andre Hedrick
2002-12-17 12:40 ` Dave Jones
2002-12-17 23:18 ` Andre Hedrick
2002-12-17 15:12 ` Alan Cox
2002-12-18 23:55 ` Pavel Machek
2002-12-19 22:17 ` H. Peter Anvin
2002-12-17 10:53 ` Ulrich Drepper
2002-12-17 11:17 ` dada1
2002-12-17 17:33 ` Ulrich Drepper
2002-12-17 17:06 ` Linus Torvalds
2002-12-17 17:55 ` Ulrich Drepper
2002-12-17 18:01 ` Linus Torvalds
2002-12-17 19:23 ` Alan Cox
2002-12-17 18:48 ` Ulrich Drepper
2002-12-17 19:19 ` H. Peter Anvin
2002-12-17 19:44 ` Alan Cox
2002-12-17 19:52 ` Richard B. Johnson
2002-12-17 19:54 ` H. Peter Anvin
2002-12-17 19:58 ` Linus Torvalds
2002-12-18 7:20 ` Kai Henningsen
2002-12-17 18:49 ` Linus Torvalds
2002-12-17 19:09 ` Ross Biro
2002-12-17 21:34 ` Benjamin LaHaise
2002-12-17 21:36 ` H. Peter Anvin
2002-12-17 21:50 ` Benjamin LaHaise
2002-12-18 23:59 ` Pavel Machek
2002-12-17 16:12 ` Hugh Dickins
2002-12-17 16:33 ` Richard B. Johnson
2002-12-17 17:47 ` Linus Torvalds
2002-12-17 16:54 ` Hugh Dickins
2002-12-17 17:07 ` Linus Torvalds
2002-12-17 17:19 ` Matti Aarnio
2002-12-17 17:55 ` Linus Torvalds
2002-12-17 18:24 ` Linus Torvalds
2002-12-17 18:33 ` Ulrich Drepper
2002-12-17 18:30 ` Ulrich Drepper
2002-12-17 19:04 ` Linus Torvalds
2002-12-17 19:19 ` Ulrich Drepper
2002-12-17 19:28 ` Linus Torvalds
2002-12-17 19:32 ` H. Peter Anvin
2002-12-17 19:44 ` Linus Torvalds
2002-12-17 19:53 ` Ulrich Drepper
2002-12-17 20:01 ` Linus Torvalds
2002-12-17 20:17 ` Ulrich Drepper
2002-12-18 4:15 ` Linus Torvalds
2002-12-18 4:15 ` Linus Torvalds
2002-12-18 4:39 ` H. Peter Anvin
2002-12-18 4:49 ` Linus Torvalds
2002-12-18 6:38 ` Linus Torvalds
2002-12-18 13:17 ` Richard B. Johnson
2002-12-18 13:40 ` Horst von Brand
2002-12-18 13:47 ` Sean Neakums
2002-12-18 14:10 ` Horst von Brand
2002-12-18 14:51 ` dada1
2002-12-18 19:12 ` Mark Mielke
2002-12-18 15:52 ` Alan Cox
2002-12-18 16:41 ` Dave Jones
2002-12-18 16:49 ` Freezing.. (was Re: Intel P6 vs P7 system call performance) Linus Torvalds
2002-12-18 16:56 ` Larry McVoy
2002-12-18 16:58 ` Dave Jones
2002-12-18 17:41 ` Linus Torvalds
2002-12-18 18:03 ` Jeff Garzik
2002-12-18 18:09 ` Mike Dresser
2002-12-23 12:34 ` Kai Henningsen
2002-12-18 19:08 ` Alan Cox
2002-12-18 19:23 ` Larry McVoy
2002-12-18 19:30 ` Alan Cox
2002-12-18 19:33 ` Larry McVoy
2002-12-18 19:42 ` Alan Cox
2002-12-18 19:45 ` Larry McVoy
2002-12-18 20:39 ` John Bradford
2002-12-18 22:08 ` Larry McVoy
2002-12-18 22:37 ` John Bradford
2002-12-19 1:09 ` Alan Cox
2002-12-19 0:37 ` Russell King
2002-12-19 0:58 ` Jeff Garzik
2002-12-19 1:43 ` Martin J. Bligh
2002-12-19 10:50 ` Dave Jones
2002-12-19 0:59 ` John Bradford
2002-12-19 10:27 ` Dave Jones
2002-12-19 1:17 ` Linus Torvalds
2002-12-19 0:08 ` Alan Cox
2002-12-19 0:53 ` John Bradford
2002-12-19 13:17 ` Stephen Satchell
2002-12-19 5:34 ` Timothy D. Witham
2002-12-19 6:43 ` Andrew Morton
2002-12-19 5:45 ` Timothy D. Witham
2002-12-19 7:05 ` Martin J. Bligh
2002-12-19 6:08 ` Timothy D. Witham
2002-12-18 19:50 ` Oliver Xymoron
2002-12-18 17:06 ` Eli Carter
2002-12-18 17:08 ` Andrew Morton
2002-12-18 18:25 ` John Alvord
2002-12-18 18:41 ` Intel P6 vs P7 system call performance Horst von Brand
2002-12-17 19:26 ` Alan Cox
2002-12-17 18:57 ` Ulrich Drepper
2002-12-17 19:10 ` Linus Torvalds
2002-12-17 19:21 ` H. Peter Anvin
2002-12-17 19:37 ` Linus Torvalds
2002-12-17 19:43 ` H. Peter Anvin
2002-12-17 20:07 ` Matti Aarnio
2002-12-17 20:10 ` H. Peter Anvin [this message]
2002-12-17 19:59 ` Matti Aarnio
2002-12-17 20:06 ` Ulrich Drepper
2002-12-17 20:35 ` Daniel Jacobowitz
2002-12-18 0:20 ` Linus Torvalds
2002-12-18 0:38 ` Ulrich Drepper
2002-12-18 7:41 ` Kai Henningsen
2002-12-18 13:00 ` Rogier Wolff
2002-12-17 19:47 ` Dave Jones
2002-12-18 12:57 ` Rogier Wolff
2002-12-19 0:14 ` Pavel Machek
2002-12-17 21:38 ` Benjamin LaHaise
2002-12-17 21:41 ` H. Peter Anvin
2002-12-17 18:39 ` Jeff Dike
2002-12-17 19:05 ` Linus Torvalds
2002-12-18 5:34 ` Jeremy Fitzhardinge
2002-12-18 5:38 ` H. Peter Anvin
2002-12-18 15:50 ` Alan Cox
2002-12-18 23:51 ` Pavel Machek
2002-12-13 15:45 ` William Lee Irwin III
2002-12-13 16:49 ` Mike Hayward
2002-12-14 0:55 ` GrandMasterLee
2002-12-14 4:41 ` Mike Dresser
2002-12-14 4:53 ` Mike Dresser
2002-12-14 10:01 ` Dave Jones
2002-12-14 17:48 ` Mike Dresser
2002-12-14 18:36 ` GrandMasterLee
2002-12-15 2:03 ` J.A. Magallon
2002-12-15 21:59 ` Pavel Machek
2002-12-15 22:37 ` William Lee Irwin III
2002-12-15 22:43 ` Pavel Machek
-- strict thread matches above, loose matches on Subject: below --
2003-01-10 18:08 Gabriel Paubert
2002-12-30 13:06 Manfred Spraul
2002-12-30 14:54 ` Andi Kleen
2002-12-22 15:45 Nakajima, Jun
2002-12-22 12:33 Mikael Pettersson
2002-12-22 16:00 ` Jamie Lokier
2002-12-19 18:46 billyrose
2002-12-19 16:10 billyrose
2002-12-19 15:20 bart
2002-12-19 14:57 bart
2002-12-19 14:40 billyrose
2002-12-19 15:11 ` Richard B. Johnson
2002-12-19 13:55 bart
2002-12-19 19:37 ` Linus Torvalds
2002-12-19 22:10 ` Jamie Lokier
2002-12-19 22:16 ` H. Peter Anvin
2002-12-19 22:22 ` Linus Torvalds
2002-12-19 22:26 ` H. Peter Anvin
2002-12-19 22:49 ` Linus Torvalds
2002-12-19 23:30 ` Linus Torvalds
2002-12-22 11:08 ` James H. Cloos Jr.
2002-12-22 18:49 ` Linus Torvalds
2002-12-22 19:07 ` Ulrich Drepper
2002-12-22 19:34 ` Linus Torvalds
2002-12-22 19:51 ` Ulrich Drepper
2002-12-22 20:50 ` James H. Cloos Jr.
2002-12-22 20:56 ` Ulrich Drepper
2002-12-22 19:17 ` Ulrich Drepper
2002-12-20 10:08 ` Ulrich Drepper
2002-12-20 12:06 ` Jamie Lokier
2002-12-20 16:47 ` Linus Torvalds
2002-12-20 23:38 ` Jamie Lokier
2002-12-20 23:50 ` H. Peter Anvin
2002-12-21 0:09 ` Linus Torvalds
2002-12-21 17:18 ` Jamie Lokier
2002-12-21 19:39 ` Linus Torvalds
2002-12-22 2:18 ` Jamie Lokier
2002-12-22 3:11 ` Linus Torvalds
2002-12-22 10:13 ` Ingo Molnar
2002-12-22 15:32 ` Jamie Lokier
2002-12-22 18:53 ` Linus Torvalds
2002-12-23 5:03 ` Linus Torvalds
2002-12-23 7:14 ` Ulrich Drepper
2002-12-23 23:27 ` Petr Vandrovec
2002-12-24 0:22 ` Stephen Rothwell
2002-12-24 4:10 ` Linus Torvalds
2002-12-24 8:05 ` Rogier Wolff
2002-12-24 18:51 ` Linus Torvalds
2002-12-24 21:10 ` Rogier Wolff
2002-12-27 16:14 ` Kai Henningsen
2002-12-24 19:36 ` Linus Torvalds
2002-12-24 20:20 ` Ingo Molnar
2002-12-24 20:27 ` Linus Torvalds
2002-12-24 20:31 ` Ingo Molnar
2002-12-24 20:39 ` Linus Torvalds
2002-12-28 2:05 ` H. Peter Anvin
2002-12-28 2:04 ` H. Peter Anvin
2002-12-26 7:47 ` Pavel Machek
2003-01-10 11:30 ` Gabriel Paubert
2003-01-10 17:11 ` Linus Torvalds
2002-12-22 10:23 ` Ingo Molnar
2002-12-19 13:22 bart
2002-12-19 13:38 ` Dave Jones
2002-12-19 14:22 ` Jamie Lokier
2002-12-19 16:56 ` Dave Jones
2002-12-19 19:29 ` H. Peter Anvin
2002-12-18 23:51 billyrose
2002-12-19 13:10 ` Richard B. Johnson
2002-12-18 12:55 Terje Eggestad
2002-12-18 20:14 ` H. Peter Anvin
2002-12-18 20:25 ` Richard B. Johnson
2002-12-18 20:26 ` H. Peter Anvin
2002-12-18 22:28 ` Jamie Lokier
2002-12-18 22:37 ` Linus Torvalds
2002-12-18 22:57 ` Linus Torvalds
2002-12-20 0:53 ` Daniel Jacobowitz
2002-12-20 1:47 ` Linus Torvalds
2002-12-20 2:37 ` Daniel Jacobowitz
2002-12-18 22:39 ` H. Peter Anvin
2002-12-18 1:30 Nakajima, Jun
2002-12-18 1:54 ` Ulrich Drepper
2002-12-18 3:36 ` H. Peter Anvin
2002-12-18 4:05 ` Linus Torvalds
2002-12-18 4:36 ` H. Peter Anvin
2002-12-18 4:07 ` Linus Torvalds
2002-12-18 4:40 ` Stephen Rothwell
2002-12-18 4:52 ` Linus Torvalds
2002-12-18 4:53 ` Andrew Morton
2002-12-18 19:12 ` Andrew Morton
2002-12-18 23:45 ` Pavel Machek
2002-12-20 3:05 ` Alan Cox
2002-12-20 4:03 ` Stephen Rothwell
2002-12-18 6:00 ` Brian Gerst
2002-12-17 16:32 Manfred Spraul
2002-12-17 17:13 ` Richard B. Johnson
2002-12-17 17:19 ` Richard B. Johnson
2002-12-17 17:37 ` Mikael Pettersson
2002-12-17 16:14 John Reiser
2002-12-17 16:01 John Reiser
[not found] <20021209193649.GC10316@suse.de.suse.lists.linux.kernel>
[not found] ` <Pine.LNX.4.44.0212161639310.1623-100000@penguin.transmeta.com.suse.lists.linux.kernel>
2002-12-17 8:56 ` Andi Kleen
2002-12-17 16:57 ` Linus Torvalds
2002-12-18 5:25 ` Brian Gerst
2002-12-18 6:06 ` Linus Torvalds
2002-12-21 11:24 ` Ingo Molnar
2002-12-21 17:28 ` Jamie Lokier
2002-12-21 16:07 ` Christian Leber
2002-12-15 8:43 scott thomason
2002-12-15 4:06 Albert D. Cahalan
2002-12-15 22:01 ` Pavel Machek
2002-12-16 7:33 ` Albert D. Cahalan
2002-12-16 11:17 ` Pavel Machek
2002-12-16 17:54 ` Mark Mielke
2002-12-16 16:07 ` Jonah Sherman
2002-12-17 4:10 ` David Schwartz
2002-12-17 8:02 ` Helge Hafting
2002-12-16 19:55 ` H. Peter Anvin
2002-12-13 21:52 Margit Schubert-While
2002-12-13 19:32 Dieter Nützel
2002-12-13 17:51 Margit Schubert-While
2002-12-11 12:48 Terje Eggestad
2002-12-11 18:50 ` H. Peter Anvin
2002-12-12 9:42 ` Terje Eggestad
2002-12-12 10:06 ` Arjan van de Ven
2002-12-12 10:31 ` Terje Eggestad
2002-12-12 19:03 ` H. Peter Anvin
2002-12-12 20:36 ` Mark Mielke
2002-12-12 20:56 ` J.A. Magallon
2002-12-12 20:12 ` Zac Hansen
2002-12-13 9:21 ` Terje Eggestad
2002-12-13 15:58 ` Ville Herva
2002-12-13 21:57 ` Terje Eggestad
2002-12-13 22:53 ` H. Peter Anvin
2002-12-12 20:56 ` Vojtech Pavlik
2002-12-09 7:01 Samium Gromoff
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