Using systemtap to look at futexs

[Tim Bird]

Frank Ch. Eigler wrote:
> Hi -
> 
> On Tue, May 16, 2006 at 03:09:03PM -0700, Tim Bird wrote:
> 
>> [...]  Aside from improved ease-of-development, it could be
>> beneficial to have a standardized output format, such that the data
>> could be used with other trace presentation and analysis tools (like
>> lttv from LTT or kd from KFT).
> 
> One can write functions in the scripting language to format trace data
> in any reasonable format.  

Yes, but my point is that outputting a known, standardized format
(as opposed to "any reasonable format") could have side benefits.
If you're going to write helper functions for the output, a nice
side effect of the regularization of the handling would also be
a regularization of the formatting, with the possibility to make
the data more widely usable.

> (Plus one can write scripting language code
> to perform some of the analysis live that these trace tools do after
> the fact.)

Yes, some.  Is there a visualization tool for SystemTap data?
 -- Tim

P.S. Sorry, my original comment didn't go to the list because
I forgot to reply-all. I hope it's OK to put the thread back
on-list.

=============================
Tim Bird
Architecture Group Chair, CE Linux Forum
Senior Staff Engineer, Sony Electronics
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