Messages in this thread | | | Date | Wed, 9 Apr 2008 20:24:54 +0200 | From | Andi Kleen <> | Subject | Re: [patch 09/17] Add all cpus option to stop machine run |
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On Wed, Apr 09, 2008 at 10:10:10PM +0400, Alexey Dobriyan wrote: > I continue to think that all this so-called "immediate" infrastructure > is an absolute overkill and declared D-cache line savings will _never_ > matter
You are quite wrong on that.
> and will never be measured on real life workloads. Right now you > claim 1 (one) cacheline saving in schedule() which can be trivially
That is just an example. Once the infrastructure is in a lot more flags would move it into it. I think eventually most sysctls should be immediate values for once.
> Also, my gut feeling of a guy who is also on receiveing end of bugreports > at SWsoft that line with .text games was crossed by SMP alternatives and
You already lost -- Linux regularly rewrites itself. Ok not quite yet but self modifying code is already wide spread and happens commonly (e.g. with alternatives and some other cases)
> > And bugs when CPU executed bullshit and silently rebooted.
So far nobody has seen that and the probably of it actually happening is rather remote too.
> And so on. > > Alexey, more and more liking OpenBSD > where such games won't even > hit mailing lists
Maybe that is why Linux scales to large systems and OpenBSD doesn't ...
-Andi
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