Re: [PATCH] Re: UNWIND_INFO slowdown in -mm1

[Andi Kleen]

On Tuesday 17 October 2006 17:48, Jan Beulich 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 added the patch now, thanks.

Not sure this is still .19 material though or better delayed for .20. 
What do you think?

-Andi
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