From: tromey@redhat.com (Tom Tromey)
Subject: [ltt-dev] LTTng-UST vs SystemTap userspace tracing benchmarks
Date: Wed, 16 Feb 2011 08:30:32 -0700 [thread overview]
Message-ID: <m37hd06lpj.fsf@fleche.redhat.com> (raw)
In-Reply-To: <4D5AA164.1050607@polymtl.ca> (Julien Desfossez's message of "Tue, 15 Feb 2011 10:53:08 -0500")
>>>>> "Julien" == Julien Desfossez <julien.desfossez at polymtl.ca> writes:
Julien> SystemTap 1.2-5 (from Debian package), hooking on DTrace user-space
Julien> static markup.
The sdt.h stuff has been rewritten at least once since then. I'd
suggest trying the latest. I think it probably won't matter for the
flight recorder mode, but it may matter for measuring overhead.
Julien> 0) Baseline : running the program without any instrumentation
Julien> 1) Flight recorder tracing comparison UST vs SystemTap
I'd be interested to also see the numbers when the probes are in place
in the source, but not enabled. That is, what is the overhead of a
disabled probe?
When doing this with SystemTap it would be interesting to try twice:
once with a semaphore for each probe, and once without.
Tom
next prev parent reply other threads:[~2011-02-16 15:30 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-15 15:53 Julien Desfossez
2011-02-15 16:25 ` William Cohen
2011-02-17 16:20 ` Julien Desfossez
2011-02-15 16:26 ` Frank Ch. Eigler
2011-02-15 16:54 ` Mathieu Desnoyers
2011-02-15 17:39 ` Frank Ch. Eigler
2011-02-15 22:25 ` Mathieu Desnoyers
2011-02-15 17:00 ` Stefan Hajnoczi
2011-02-15 17:04 ` Mathieu Desnoyers
2011-02-16 10:56 ` Mark Wielaard
2011-02-16 18:50 ` Roland McGrath
2011-02-16 20:00 ` [ltt-dev] Porting "jump labels" to userspace (was: Re: LTTng-UST vs SystemTap userspace tracing benchmarks) Mathieu Desnoyers
2011-02-16 20:04 ` Roland McGrath
2011-02-16 20:17 ` [ltt-dev] Porting "jump labels" to userspace David Daney
2011-02-16 20:39 ` Mathieu Desnoyers
2011-02-16 20:45 ` Thomas Gleixner
2011-02-16 21:42 ` Peter Zijlstra
2011-02-17 13:58 ` Ingo Molnar
2011-02-16 20:14 ` David Daney
2011-02-16 20:36 ` Mathieu Desnoyers
2011-02-16 20:55 ` [ltt-dev] LTTng-UST vs SystemTap userspace tracing benchmarks Stefan Hajnoczi
2011-02-16 21:05 ` Mathieu Desnoyers
2011-02-16 21:16 ` Mark Wielaard
2011-02-15 17:03 ` Mark Wielaard
2011-02-16 15:30 ` Tom Tromey [this message]
2011-02-16 18:19 ` Roland McGrath
2011-02-17 17:33 ` Julien Desfossez
2011-02-17 19:11 ` Josh Stone
2011-02-17 19:33 ` Julien Desfossez
2011-02-17 19:47 ` Josh Stone
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