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SubjectRe: [PATCH] anobjrmap 9 priority mjb tree
On Fri, 9 Apr 2004, Martin J. Bligh wrote:
> > This anobjrmap 9 (or anon_mm9) patch adds Rajesh's radix priority search
> > tree on top of Martin's 2.6.5-rc3-mjb2 tree, making a priority mjb tree!
> > Approximately equivalent to Andrea's 2.6.5-aa1, but using anonmm instead
> > of anon_vma, and of course each tree has its own additional features.
>
> This slows down kernel compile a little, but worse, it slows down SDET
> by about 25% (on the 16x). I think you did something horrible to sem
> contention ... presumably i_shared_sem, which SDET was fighting with
> as it was anyway ;-(
>
> Diffprofile shows:
>
> 122626 15.7% total
> 44129 790.0% __down
> 20988 4.1% default_idle

Many thanks for the good news, Martin ;)
Looks like I've done something very stupid, perhaps a mismerge.
Not found it yet, I'll carry on looking tomorrow.

Hugh

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