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SubjectRe: 2.2.18Pre Lan Performance Rocks!


Anton Altaparmakov wrote:
>
>
> IMHO stability is more important than anything else. - I prefer to run 20
> Linux servers which will result in no phonecalls at midnight calling me
> into College to reboot them compared to a Netware server which runs as fast
> as the 20 Linux servers but disturbs my out-of-working-hours time!
>
> I agree that having ring 0 OS will improve performance, no doubt about
> that, but at what price?
>

It depends on how well we do out job. I guess that's the real debate.
Welcome back,
how's things.

:-)

Jeff

> Just my 2p.
>
> Anton
>
> >And on sane architectures like alpha you don't even need to flush the TLB
> >during "real" context switching so all your worry to share the same VM for
> >everything is almost irrelevant there since it happens all the time anyways
> >(until you overflow the available ASN bits that takes a lots of forks to
> >happen).
> >
> >So IMHO for you it's much saner to move all your performance critical code
> >into
> >kernel space (that will be just stability-risky enough as khttpd and tux are).
> >In 2.4.x that will avoid all the cr3 reloads and that will be enough as what
> >you really care during fileserving are the copies that you must avoid.
> >
> >Andrea
> >-
> >To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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> >Please read the FAQ at http://www.tux.org/lkml/
>
> --
> "Education is what remains after one has forgotten everything he
> learned in school." - Albert Einstein
> --
> Anton Altaparmakov Voice: +44-(0)1223-333541(lab) / +44-(0)7712-632205(mobile)
> Christ's College eMail: AntonA@bigfoot.com / aia21@cam.ac.uk
> Cambridge CB2 3BU ICQ: 8561279
> United Kingdom WWW: http://www-stu.christs.cam.ac.uk/~aia21/
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