Messages in this thread | | | Date | Wed, 18 Oct 2006 10:45:02 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH] Re: UNWIND_INFO slowdown in -mm1 |
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* Jan Beulich <jbeulich@novell.com> wrote:
> >in 2.6.18-mm1 we are seeing _really_ long delays in the unwind code. > >(full trace attached) On an Athlon64 3800+ CPU: > > Below patch should help, can you try it out? Short of the linker > supporting building a binary lookup table at build time, it creates > one as soon as the bootmem allocator is usable (so you'll continue > using the linear lookup for the first [hopefully] few calls). The code > should be ready to utilize a build-time created table once a fixed > linker becomes available.
i tried this ontop of -git and it builds and boots fine, and the bootup speed problems seem to be gone. Thanks!
> Signed-off-by: Jan Beulich <jbeulich@novell.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
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