Re: time spent in function, including all callees

[Maynard J. <may...@us...>]

On 11/02/2010 9:19 AM, Jay Foad wrote:
> On 2 November 2010 13:53, Maynard Johnson<may...@us...>  wrote:
>> Jay Foad wrote:
>>> Hi,
>>>
>>> Can I use opreport --callgraph to tell me what proportion of run time
>>> was spent either in function foo(), or in any function called by foo()
>>> ? In other words I want to know the proportion of all samples with
>>> stack trace info, where foo was found anywhere in the stack trace.
>> Yes, that information is certainly present in the callgraph report.  The non-indented lines show the total samples and their percentage relative to total samples.
>
> The non-indented lines show the number/percentage of samples taken in
> that function itself, representing the time spent in the function
> itself, *excluding* time spent in the function's callees.
>
> I want to see the time spent in the function *including* time spent in
> any callees.
I take it you mean "time spent in the callchain".  And since opreport shows only 
direct callers and callees for a given function, you'd have to chase around the 
report to manually gather the information you want.  It's possible there's a GUI 
available that might provide the callchain roll-up you're looking for -- or at 
least would make it easier to gather up.  I added Richard Purdie to cc since 
he's involved with OProfileUI (http://labs.o-hand.com/oprofileui/).  There's 
also an oprofile eclipse plug-in 
(http://www.eclipse.org/linuxtools/projectPages/oprofile/).   I've not had a 
chance to check it out before, and, unfortnately, I wasn't able to get this to 
install when I tried this morning.  Don't know if that plug-in supports 
callgraph either.

-Maynard
>
> Thanks,
> Jay.