From: wcohen@redhat.com (William Cohen)
Subject: [ltt-dev] LTTng-UST vs SystemTap userspace tracing benchmarks
Date: Tue, 15 Feb 2011 11:25:24 -0500 [thread overview]
Message-ID: <4D5AA8F4.8060902@redhat.com> (raw)
In-Reply-To: <4D5AA164.1050607@polymtl.ca>
On 02/15/2011 10:53 AM, Julien Desfossez wrote:
> LTTng-UST vs SystemTap userspace tracing benchmarks
>
> February 15th, 2011
>
> Authors: Mathieu Desnoyers <mathieu.desnoyers at efficios.com>
> Julien Desfossez <julien.desfossez at polymtl.ca>
> * SystemTap probe (stap testutrace.stp -F) :
> probe process("./.libs/tracepoint_benchmark").mark("single_trace") {
> printf("%d : %s\n", gettimeofday_ns(), $arg1);
> }
Hi Julien,
How much of the SystemTap overhead is due to the printf() statement in the probe? What is the run time for the following:
probe process("./.libs/tracepoint_benchmark").mark("single_trace") {}
Is the code for the benchmarks available, so we can take a look at reducing the overhead of SystemTap?
-Will
next prev parent reply other threads:[~2011-02-15 16:25 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 [this message]
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
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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