Re: 2.6.11 vs 2.6.10 slowdown on i686

[Kurt Garloff]

Hi Nick,

On Thu, Mar 17, 2005 at 11:37:24PM +1100, Nick Piggin wrote:
> Ian Pratt wrote:
> >fork: 166 -> 235  (40% slowdown)
> >exec: 857 -> 1003 (17% slowdown)
> >
> >I'm guessing this is down to the 4 level pagetables. This is rather a
> >surprise as I thought the compiler would optimise most of these
> >changes away. Apparently not. 
> 
> There are some changes in the current -bk tree (which are a
> bit in-flux at the moment) which introduce some optimisations.
> 
> They should bring 2-level performance close to par with 2.6.10.
> If not, complain again :)

Is there a clean patchset that we should look at to test?

Regards,
-- 
Kurt Garloff, Director SUSE Labs, Novell Inc.

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