Messages in this thread | | | From | Bernd Schubert <> | Subject | Re: frame unwinder patches | Date | Fri, 5 Sep 2008 16:48:52 +0200 |
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On Friday 05 September 2008 16:13:37 Arjan van de Ven wrote: > On Fri, 5 Sep 2008 15:52:47 +0200 > > Bernd Schubert <bs@q-leap.de> wrote: > > > (and if you really care it's 1 line of code to turn it off) > > > > It is not only this, I think the dwarf2 stack unwinder patches > > provide by far better traces than the in-kernel unwinder. At least > > ever since I applied these patches to our kernels, I was able to read > > the stack dumps... > > they really wouldn't be different than the ones you get if you remove > the "?" lines.
Well may be, but then there is still the performace degrading, so I don't want to have it enabled on our production kernels. I admit I never measured what is the difference between of CONFIG_FRAME_POINTER=y and =n, but the fact the help text says there is a difference already makes me want to disable it (especially, since we have to provide benchmarks before we can sell a system).
Cheers, Bernd
-- Bernd Schubert Q-Leap Networks GmbH
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