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DateSun, 23 Nov 2008 14:56:42 -0500 (EST)
FromSteven Rostedt <>
SubjectRe: [PATCH 4/4] trace: profile all if conditionals

On Sun, 23 Nov 2008, Andi Kleen wrote:
> Steven Rostedt <rostedt@goodmis.org> writes:

> > This adds a significant amount of overhead and should only be used
> > by those analyzing their system.
>
> Often this can be also done using CPU performance counters. Might
> be a cheaper option.

I'd love to add an option that could hook into any arch with HW support
for this. We could dump out the same information, but just a different way
to gather it. But I'm still ignorant to the use of CPU performance
counters and how to find which branch matches which if.

-- Steve



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