From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Tim Bird <tim.bird@am.sony.com>
Cc: Ingo Molnar <mingo@elte.hu>, Roman Zippel <zippel@linux-m68k.org>,
Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
linux-kernel@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>,
Andrew Morton <akpm@osdl.org>, Ingo Molnar <mingo@redhat.com>,
Greg Kroah-Hartman <gregkh@suse.de>,
Thomas Gleixner <tglx@linutronix.de>,
Tom Zanussi <zanussi@us.ibm.com>,
ltt-dev@shafik.org, Michel Dagenais <michel.dagenais@polymtl.ca>
Subject: Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108
Date: Fri, 15 Sep 2006 12:40:06 +0100 [thread overview]
Message-ID: <1158320406.29932.16.camel@localhost.localdomain> (raw)
In-Reply-To: <4509B03A.3070504@am.sony.com>
Ar Iau, 2006-09-14 am 12:40 -0700, ysgrifennodd Tim Bird:
> It's only zero maintenance overhead for you. Someone has to
> maintain it. The party line for years has been that in-tree
> maintenance is easier than out-of-tree maintenance.
That misses the entire point. If you have dynamic tracepoints you don't
have any static tracepoints to maintain because you don't need them.
They may be a clock or three slower but you are then going to branch
into the trace tool code paths, take tlb misses, take cache misses, and
eventually get back, so the cost of it being dynamic is so close to zero
in the biger picture it doesn't matter.
Alan
next prev parent reply other threads:[~2006-09-15 11:19 UTC|newest]
Thread overview: 284+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-14 3:38 [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108 Mathieu Desnoyers
2006-09-14 11:27 ` Ingo Molnar
2006-09-14 13:40 ` Roman Zippel
2006-09-14 13:55 ` Ingo Molnar
2006-09-14 14:33 ` Roman Zippel
2006-09-14 15:26 ` Michel Dagenais
2006-09-14 17:48 ` Ingo Molnar
2006-09-15 15:04 ` Mathieu Desnoyers
2006-09-14 18:08 ` Nick Piggin
2006-09-14 18:38 ` Karim Yaghmour
2006-09-14 17:13 ` Ingo Molnar
2006-09-14 17:55 ` Roman Zippel
2006-09-14 18:15 ` Ingo Molnar
2006-09-14 18:35 ` Mathieu Desnoyers
2006-09-14 18:54 ` Karim Yaghmour
2006-09-15 9:20 ` Jes Sorensen
2006-09-15 12:38 ` Karim Yaghmour
2006-09-15 12:32 ` Jes Sorensen
2006-09-15 14:09 ` Karim Yaghmour
2006-09-15 14:30 ` Jes Sorensen
2006-09-15 15:12 ` Karim Yaghmour
2006-09-16 10:41 ` Jes Sorensen
2006-09-16 15:28 ` Karim Yaghmour
2006-09-18 8:57 ` Jes Sorensen
2006-09-18 14:48 ` Ingo Molnar
2006-09-18 15:37 ` Karim Yaghmour
2006-09-15 13:20 ` Paul Mundt
2006-09-15 13:41 ` Roman Zippel
2006-09-15 13:44 ` Jes Sorensen
2006-09-15 14:03 ` Roman Zippel
2006-09-15 14:37 ` Alan Cox
2006-09-15 14:34 ` Roman Zippel
2006-09-15 13:57 ` Paul Mundt
2006-09-15 14:17 ` Karim Yaghmour
2006-09-15 14:13 ` Jes Sorensen
2006-09-15 14:31 ` Karim Yaghmour
2006-09-15 14:28 ` Paul Mundt
2006-09-15 14:46 ` Martin J. Bligh
2006-09-15 15:22 ` Alan Cox
2006-09-15 15:47 ` Martin J. Bligh
2006-09-15 14:51 ` Karim Yaghmour
2006-09-15 15:00 ` Thomas Gleixner
2006-09-15 15:28 ` Karim Yaghmour
2006-09-15 18:16 ` Andrew Morton
2006-09-15 18:19 ` Ingo Molnar
2006-09-15 19:26 ` Karim Yaghmour
2006-09-15 19:43 ` Roman Zippel
2006-09-15 20:05 ` Ingo Molnar
2006-09-15 20:22 ` Mathieu Desnoyers
2006-09-15 21:08 ` Jose R. Santos
2006-09-15 21:25 ` Mathieu Desnoyers
2006-09-15 22:02 ` Jose R. Santos
2006-09-15 22:03 ` Ingo Molnar
2006-09-15 22:32 ` Karim Yaghmour
2006-09-15 22:43 ` Ingo Molnar
2006-09-15 23:33 ` Karim Yaghmour
2006-09-15 23:52 ` Ingo Molnar
2006-09-16 2:24 ` Karim Yaghmour
2006-09-15 23:53 ` Ingo Molnar
2006-09-16 2:51 ` Karim Yaghmour
2006-09-15 22:59 ` Frank Ch. Eigler
2006-09-15 23:40 ` Karim Yaghmour
2006-09-15 23:17 ` Jose R. Santos
2006-09-15 21:32 ` Ingo Molnar
2006-09-15 21:58 ` Mathieu Desnoyers
2006-09-15 22:19 ` Ingo Molnar
2006-09-15 22:45 ` Karim Yaghmour
2006-09-16 9:59 ` Jes Sorensen
2006-09-16 17:24 ` Mathieu Desnoyers
2006-09-16 17:35 ` Ingo Molnar
2006-09-16 17:56 ` Mathieu Desnoyers
2006-09-16 19:10 ` Ingo Molnar
2006-09-16 19:37 ` Ingo Molnar
2006-09-16 20:29 ` [patch] kprobes: optimize branch placement Ingo Molnar
2006-09-16 20:43 ` Ingo Molnar
2006-09-16 21:44 ` Karim Yaghmour
2006-09-16 22:57 ` Andrew Morton
2006-09-16 23:24 ` Ingo Molnar
2006-09-17 2:44 ` Karim Yaghmour
2006-09-17 1:59 ` Karim Yaghmour
2006-09-17 12:15 ` Mike Galbraith
2006-09-16 22:56 ` Andrew Morton
2006-09-16 23:30 ` Ingo Molnar
2006-09-18 13:52 ` Ananth N Mavinakayanahalli
2006-09-16 22:55 ` Andrew Morton
2006-09-17 10:13 ` [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108 Frederik Deweerdt
2006-09-17 14:00 ` Ingo Molnar
2006-09-16 19:51 ` Karim Yaghmour
2006-09-16 23:40 ` Ingo Molnar
2006-09-17 5:33 ` Mathieu Desnoyers
2006-09-16 18:11 ` Karim Yaghmour
2006-09-16 17:44 ` Ingo Molnar
2006-09-16 18:15 ` Karim Yaghmour
2006-09-18 8:18 ` Jes Sorensen
2006-09-16 17:55 ` Karim Yaghmour
2006-09-18 8:21 ` Jes Sorensen
2006-09-18 8:33 ` Jes Sorensen
2006-09-18 15:01 ` Mathieu Desnoyers
2006-09-16 17:30 ` Mathieu Desnoyers
2006-09-18 8:15 ` Jes Sorensen
2006-09-18 14:53 ` Mathieu Desnoyers
2006-09-18 15:17 ` Ingo Molnar
2006-09-18 16:54 ` Mathieu Desnoyers
2006-09-15 21:12 ` Roman Zippel
2006-09-15 21:08 ` Ingo Molnar
2006-09-15 20:13 ` Andrew Morton
2006-09-15 21:49 ` Jose R. Santos
2006-09-16 10:19 ` Jes Sorensen
2006-09-16 16:05 ` Karim Yaghmour
2006-09-17 4:54 ` Ganesan Rajagopal
2006-09-18 8:13 ` Jes Sorensen
2006-09-18 14:46 ` Mathieu Desnoyers
2006-09-18 17:06 ` Martin Bligh
2006-09-20 14:17 ` Jes Sorensen
2006-09-15 19:35 ` Thomas Gleixner
2006-09-15 19:40 ` Ingo Molnar
2006-09-15 19:56 ` Karim Yaghmour
2006-09-15 20:23 ` Thomas Gleixner
2006-09-15 20:40 ` Roman Zippel
2006-09-15 20:48 ` Ingo Molnar
2006-09-15 21:17 ` Karim Yaghmour
2006-09-15 21:15 ` Ingo Molnar
2006-09-15 21:56 ` Karim Yaghmour
2006-09-15 21:27 ` Roman Zippel
2006-09-15 21:51 ` Ingo Molnar
2006-09-15 22:15 ` Karim Yaghmour
2006-09-15 22:53 ` Roman Zippel
2006-09-15 23:14 ` Ingo Molnar
2006-09-15 23:49 ` Nicholas Miell
2006-09-15 23:57 ` Ingo Molnar
2006-09-16 0:41 ` Nicholas Miell
2006-09-16 0:31 ` Roman Zippel
2006-09-16 8:20 ` Ingo Molnar
2006-09-16 8:21 ` Ingo Molnar
2006-09-16 8:21 ` Ingo Molnar
2006-09-16 8:22 ` Ingo Molnar
2006-09-16 19:58 ` Roman Zippel
2006-09-16 22:50 ` Ingo Molnar
2006-09-16 23:00 ` Ingo Molnar
2006-09-17 1:15 ` Roman Zippel
2006-09-17 8:42 ` Ingo Molnar
2006-09-17 15:16 ` Roman Zippel
2006-09-17 15:25 ` Ingo Molnar
2006-09-17 16:02 ` Roman Zippel
2006-09-17 16:45 ` Ingo Molnar
2006-09-17 16:59 ` Nick Piggin
2006-09-17 17:26 ` Roman Zippel
2006-09-17 17:56 ` Nick Piggin
2006-09-17 18:59 ` Roman Zippel
2006-09-17 21:23 ` Ingo Molnar
2006-09-17 21:52 ` Roman Zippel
2006-09-17 22:27 ` Ingo Molnar
2006-09-17 21:40 ` Ingo Molnar
2006-09-18 8:43 ` Jes Sorensen
2006-09-17 21:32 ` Ingo Molnar
2006-09-17 19:23 ` Ingo Molnar
2006-09-17 19:45 ` Roman Zippel
2006-09-17 20:56 ` Ingo Molnar
2006-09-17 21:36 ` Roman Zippel
2006-09-17 22:13 ` Ingo Molnar
2006-09-16 23:14 ` Ingo Molnar
2006-09-17 14:19 ` Frank Ch. Eigler
2006-09-17 15:31 ` Ingo Molnar
2006-09-17 17:15 ` Mathieu Desnoyers
[not found] ` <y0mu036eglz.fsf@ton.toronto.redhat.com>
2006-09-17 15:00 ` Ingo Molnar
2006-09-16 8:23 ` Ingo Molnar
2006-09-16 8:23 ` Ingo Molnar
2006-09-16 8:23 ` Ingo Molnar
2006-09-15 21:05 ` Karim Yaghmour
2006-09-15 21:17 ` Thomas Gleixner
2006-09-15 21:31 ` Karim Yaghmour
2006-09-15 20:00 ` Mathieu Desnoyers
2006-09-15 20:27 ` Jose R. Santos
2006-09-15 20:37 ` Alan Cox
2006-09-15 20:26 ` Mathieu Desnoyers
2006-09-15 20:51 ` Karim Yaghmour
2006-09-17 17:53 ` Mathieu Desnoyers
2006-09-17 19:35 ` printk instrumentation with LTTng Mathieu Desnoyers
2006-09-15 15:24 ` [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108 Alan Cox
2006-09-15 15:23 ` Karim Yaghmour
2006-09-15 14:39 ` Jes Sorensen
2006-09-15 15:04 ` Karim Yaghmour
2006-09-14 19:40 ` Tim Bird
2006-09-14 20:00 ` Ingo Molnar
2006-09-14 20:46 ` Karim Yaghmour
2006-09-19 12:05 ` Christoph Hellwig
2006-09-14 21:02 ` Roman Zippel
2006-09-15 11:40 ` Alan Cox [this message]
2006-09-15 11:46 ` Roman Zippel
2006-09-15 12:38 ` Alan Cox
2006-09-15 12:39 ` Roman Zippel
2006-09-15 13:41 ` Alan Cox
2006-09-15 13:34 ` Roman Zippel
2006-09-15 14:41 ` Alan Cox
2006-09-15 14:35 ` Karim Yaghmour
2006-09-15 14:58 ` Alan Cox
2006-09-15 14:57 ` Karim Yaghmour
2006-09-15 17:49 ` Andrew Morton
2006-09-15 18:20 ` Karim Yaghmour
2006-09-15 17:01 ` Tim Bird
2006-09-15 17:08 ` Frank Ch. Eigler
2006-09-15 17:57 ` Andrew Morton
2006-09-15 18:31 ` Alan Cox
2006-09-15 18:12 ` Ingo Molnar
2006-09-15 19:10 ` Roman Zippel
2006-09-15 19:10 ` Ingo Molnar
2006-09-15 20:05 ` Thomas Gleixner
2006-09-15 20:35 ` Roman Zippel
2006-09-15 21:44 ` Tim Bird
2006-09-19 12:29 ` Christoph Hellwig
2006-09-19 13:17 ` Roman Zippel
2006-09-15 18:24 ` Frank Ch. Eigler
2006-09-15 18:23 ` Ingo Molnar
2006-09-15 18:18 ` Martin Bligh
2006-09-15 18:10 ` Jose R. Santos
2006-09-15 19:49 ` Mathieu Desnoyers
2006-09-15 20:54 ` Jose R. Santos
2006-09-15 21:42 ` Karim Yaghmour
2006-09-15 21:46 ` Mathieu Desnoyers
2006-09-19 15:05 ` Jose R. Santos
2006-09-19 15:30 ` Mathieu Desnoyers
2006-09-19 16:39 ` Jose R. Santos
2006-09-19 18:03 ` Mathieu Desnoyers
2006-09-15 17:45 ` Andrew Morton
2006-09-15 18:16 ` Karim Yaghmour
2006-09-15 19:20 ` Jose R. Santos
2006-09-15 19:59 ` Andrew Morton
2006-09-15 20:24 ` Karim Yaghmour
2006-09-15 20:25 ` Thomas Gleixner
2006-09-14 19:47 ` Roman Zippel
2006-09-14 20:24 ` Ingo Molnar
2006-09-14 20:54 ` Roman Zippel
2006-09-14 21:08 ` Daniel Walker
2006-09-14 21:30 ` Roman Zippel
2006-09-14 22:15 ` Ingo Molnar
2006-09-14 23:39 ` Roman Zippel
2006-09-14 23:43 ` Ingo Molnar
2006-09-15 0:27 ` Roman Zippel
2006-09-15 1:47 ` Mathieu Desnoyers
2006-09-15 5:47 ` Vara Prasad
2006-09-14 18:12 ` Karim Yaghmour
2006-09-14 20:25 ` Martin Bligh
2006-09-14 20:34 ` Ingo Molnar
2006-09-14 20:55 ` Martin Bligh
2006-09-14 21:31 ` Ingo Molnar
2006-09-14 22:25 ` Martin Bligh
2006-09-14 22:36 ` Ingo Molnar
2006-09-14 22:59 ` Martin Bligh
2006-09-14 23:19 ` Ingo Molnar
2006-09-15 0:19 ` Nicholas Miell
2006-09-15 1:04 ` Martin J. Bligh
2006-09-15 12:38 ` Ingo Molnar
2006-09-15 7:00 ` Vara Prasad
2006-09-15 15:37 ` Michel Dagenais
2006-09-19 12:08 ` Christoph Hellwig
2006-09-14 21:07 ` Roman Zippel
2006-09-15 9:29 ` Jes Sorensen
2006-09-14 17:51 ` Karim Yaghmour
2006-09-14 15:19 ` Mathieu Desnoyers
2006-09-14 19:39 ` Frank Ch. Eigler
2006-09-15 17:13 ` Jose R. Santos
2006-09-14 15:02 ` Mathieu Desnoyers
2006-09-14 15:14 ` Martin J. Bligh
2006-09-14 17:43 ` Ingo Molnar
2006-09-14 18:25 ` Karim Yaghmour
2006-09-14 20:03 ` Martin Bligh
2006-09-14 20:14 ` Ingo Molnar
2006-09-14 20:40 ` Martin Bligh
2006-09-14 21:05 ` Michel Dagenais
2006-09-14 22:23 ` Ingo Molnar
2006-09-14 22:46 ` Martin Bligh
2006-09-14 22:56 ` Ingo Molnar
2006-09-14 19:03 ` grundig
2006-09-14 19:21 ` Karim Yaghmour
2006-09-14 19:48 ` Frank Ch. Eigler
2006-09-15 16:32 ` Jose R. Santos
2006-09-19 11:59 ` Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2006-09-15 3:10 James Dickens
2006-09-15 9:17 Richard J Moore
2006-09-15 17:14 Chuck Ebbert
2006-09-15 18:32 ` Alan Cox
2006-09-16 10:46 ` Jes Sorensen
2006-09-25 15:20 Chuck Ebbert
2006-09-25 15:39 ` Ingo Molnar
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