Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108

From: Roman Zippel <zippel@xxxxxxxxxxxxxx>
Date: Thu, 14 Sep 2006 15:40:41 +0200 (CEST)

Hi,

On Thu, 14 Sep 2006, Ingo Molnar wrote:

i have one very fundamental question: why should we do this
source-intrusive method of adding tracepoints instead of the dynamic,
unintrusive (and thus zero-overhead) KProbes+SystemTap method?

Could you define "zero-overhead"?
Actual implementation aside having a core number of tracepoints is far
more portable than KProbes.

bye, Roman
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

Follow-Ups:
- Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108
  - From: Ingo Molnar

References:
- [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108
  - From: Mathieu Desnoyers
- Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108
  - From: Ingo Molnar

Prev by Date: LM85 problems with 2.6.16.x
Next by Date: Re: argh! it's reiserfs deadlocking! [was: Re: JFS - real deadlock and lockdep warning (2.6.18-rc5-mm1)]
Previous by thread: Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108
Next by thread: Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108
Index(es):
- Date
- Thread

Relevant Pages

Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108
... source-intrusive method of adding tracepoints instead of the ... the original demo tracepoints that came with SystemTap still work ... Static tracepoints on the other hand, if added via an external patch, do ...
(Linux-Kernel)
Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108
... Ingo Molnar wrote: ... which tracepoints we have little chance of ever ... This count includes the inline trace functions definitions. ... - Most of these are instrumentation of the traps handlers, ...
(Linux-Kernel)
Re: Next April 24: [S390] allmodconfig build failure (trace/events)
... Ingo Molnar wrote: ... could you pick up the patch below please? ... Subject: tracing: fix compile error ... So move the tracepoints to softirq.c again. ...
(Linux-Kernel)