[ltt-dev] problems with lttng on ppc

[Mathieu Desnoyers]

* Holger brunck (holger.brunck at keymile.com) wrote:
> Hi all,
> currently I try to get lltng up and running on a ppc 8247. Compilation and
> installation of the latest tools work fine.
> 
> I use Kernel 2.6.33.4 and ltt-control-0.86-19052010.
> 
> I execute the steps described in the lttng manual. Now after mounting debugfs I
> am starting the trace:
> 
> -bash-3.2# lttctl -C -w /tmp/trace1 trace1
> Linux Trace Toolkit Trace Control 0.86-19052010
> 
> Controlling trace : trace1
> 
> lttctl: Creating trace
> lttctl: Forking lttd
> Linux Trace Toolkit Trace Daemon 0.86-19052010
> 
> Reading from debugfs directory : /mnt/debugfs/ltt/trace1
> Writing to trace directory : /tmp/trace1
> 
> lttctl: Starting trace
> 
> After some time I stop the trace:
> -bash-3.2# lttctl -D trace1
> Linux Trace Toolkit Trace Control 0.86-19052010
> 
> Controlling trace : trace1
> 
> lttctl: Pausing trace
> lttctl: Destroying trace
> 
> and dmesg says:
> LTT state dump begin
> LTT state dump thread start
> LTT state dump end
> LTT: 4 events written in channel metadata (cpu 0, index 0)
> 
> But there are at every time only this four events and nothing more. Do I miss
> something?

You missed the ltt-armall step at the beginning.

Mathieu

> 
> Any comments are appreciated.
> 
> Best regards
> Holger Brunck
> 
> 
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-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com