Re: Help on applying callgraph patch to Oprofile:

[Yeye H <hey...@gm...>]

Hello,

Thanks for the reply. I have a 2.6.9 kernel: Linux stperf05
2.6.9-34.0.1.0.11.ELsmp. But I tried opcontrol -c=2, it gives an error
message "Call-graph profiling unsupported on this kernel/hardware". BTW my
cpu is Xeon, which should be supported.

Thanks,
-Yeye

On 7/20/07, John Levon <le...@mo...> wrote:
>
> On Fri, Jul 20, 2007 at 01:50:25PM -0700, Yeye H wrote:
>
> > " This patch provides support for call-graph profiling, currently only
> on
> > x86. At each interrupt, the stack is recorded into the profile buffer,
> if
> > the information is available in the registers. The user-space support
> for
> > this, new in the 0.8 release, is still experimental."
>
> It's far easiest to just use a recent 2.6 kernel which already has these
> changes
>
> regards
> john
>