Messages in this thread | | | Date | Sun, 17 Sep 2006 01:40:47 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH 0/11] LTTng-core (basic tracing infrastructure) 0.5.108 |
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* Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> 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?
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