Messages in this thread | | | Date | Wed, 25 Feb 2009 10:10:41 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH 2/4] tracing: add event trace infrastructure |
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* Pekka Enberg <penberg@cs.helsinki.fi> wrote:
> Hi Andrew, > > On Wed, Feb 25, 2009 at 10:28 AM, Andrew Morton > <akpm@linux-foundation.org> wrote: > > A better approach would be to design simple, robust kernel interfaces > > which make sense and which aren't made all complex by putting the user > > interface in kernel space. And to maintain corresponding userspace > > tools which manipulate and present the IO from those kernel interfaces. > > We did this for kmemtrace and quite frankly, I usually end up > spending more time figuring out how to export the data from a > virtual machine than actually analyzing the results. What > makes ftrace so cool is the fact that it has almost > zero-overhead for setup and that the text-based data format > plays well with simple scripting tools available everywhere.
I just tried to write a similar reply - and ended up with a long 5 page mail which was just repeating points others and me made before.
Instead i'll now print out your reply and will hang it on the wall ... ;-)
Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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