From: Karim Yaghmour <karim@opersys.com>
To: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Jes Sorensen <jes@sgi.com>, Ingo Molnar <mingo@elte.hu>,
Roman Zippel <zippel@linux-m68k.org>,
Andrew Morton <akpm@osdl.org>,
tglx@linutronix.de, Paul Mundt <lethal@linux-sh.org>,
linux-kernel@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Greg Kroah-Hartman <gregkh@suse.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: Sat, 16 Sep 2006 13:55:36 -0400 [thread overview]
Message-ID: <450C3A98.4060704@opersys.com> (raw)
In-Reply-To: <20060916172419.GA15427@Krystal>
Mathieu Desnoyers wrote:
> The bottom line is :
>
> LTTng impact on the studied phenomenon : 35% slower
>
> LTTng+kprobes impact on the studied phenomenon : 73% slower
>
> Therefore, I conclude that on this type of high event rate workload, kprobes
> doubles the tracer impact on the system.
Amen to that. Hopefully this puts to rest the myth of Mr. Scrub.
Karim
--
President / Opersys Inc.
Embedded Linux Training and Expertise
www.opersys.com / 1.866.677.4546
next prev parent reply other threads:[~2006-09-16 17:35 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 [this message]
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
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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