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

[Ingo Molnar]

* Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx> wrote:

> > > Third run : same LTTng instrumentation, with a kprobe handler 
> > > triggered by each event traced.
> > 
> > where exactly did you put the kprobe handler?
> 
> ltt_relay_reserve_slot.
> 
> See http://ltt.polymtl.ca/svn/tests/kernel/test-kprobes.c to insert 
> the kprobe. Tests done on LTTng 0.5.111, on a x86 3GHz with 
> hyperthreading.

ok. In what way did you enable LTTng instrumentation? I have 0.5.108 
installed, and i'd like to make sure i do everything as you did, to make 
the tests comparable. Which kernel config options (default ones?), and 
what precise lttcl commands did you use, were they the usual:

  lttctl -n trace -d -l /mnt/debugfs/ltt -t /tmp/trace

? What filesystem does /tmp/trace reside on?

	Ingo
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