[ltt-dev] can we get a analysis of error return about syscall

[Mathieu Desnoyers]

* loody (miloody at gmail.com) wrote:
> 2011/1/29 loody <miloody at gmail.com>:
> > hi all:
> > if i have a user mode program which try to open a non-exist file, the
> > return value as  ENOENT, can I see the same value in LTT?
> > Is any button or filter commands on lttv to help me to list all the
> > return value of system call a user mode program called?
> >
> BTW, I have some questions about modules:
> 1. if I want to know how many modules I have right now, just look the
> '*.a, *.la" files in plugins right?

You mean LTTV modules. Yes, but they are not all loaded by default.

> 2. can I expand them later separately instead of re-installing lttv all again?

yes.

> 3. is there any doc or any commands that can tell me how to use and
> what each plugin do for?

The LTTng manual and user guide on the website are a start. Otherwise,
I'd say probably no.

Thanks,

Mathieu

> appreciate your help,
> miloody
> 
> -- 
> Regards,
> 
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-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com