Re: How to deploy lttng on an embedded system

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Hi Jerome...

On Tue, Apr 20, 2010 at 23:11, jerome zh <jeromezhr@xxxxxxxxx> wrote:
> My target system is mips32 big-endian.
> I have successfully install lttng on my PC. Since under this condition,
> lttng and lttv were installed on the same machine.
> I was confused by how to deploy the lttng and lttv on the target/host
> architecture. What kind of mechanism these two independent programs use to
> share data?

Please don't top post....

OK, I think I better understand your question now. You want to install
lttng and lttv on different machine, right?

Based on http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.116.5569&rep=rep1&type=pdf,
I conclude that LTTng use relayfs, somekind of "fast" version of
netlink and also use circular buffer (to avoid lock, I guess).

Regarding dumping the trace via network, according to
http://lttng.org/files/slides/desnoyers-talk-ols2006.pdf, we could
confirm it is able to do it. Perhaps you could read the manual in
detail to find the correct configuration.

Good luck...

-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com

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