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SubjectRe: Efficient IPC mechanism on Linux
On Wed, 2003-09-10 at 05:09, Luca Veraldi wrote:
> > For fun do the measurement on a pIV cpu. You'll be surprised.
> > The microcode "mark dirty" (which is NOT a btsl, it gets done when you do
> a write
> > memory access to the page content) result will be in the 2000 to 4000
> range I
> > predict.
> I'm not responsible for microarchitecture designer stupidity.
> If a simple STORE assembler instruction will eat up 4000 clock cycles,
> as you say here, well, I think all we Computer Scientists can go home and
> give it up now.
Unfortunately you are responsible for working with the constructs reality
has given you. Giving up is childish. Where there is a lose, there's a
chance it was a tradeoff for a win elsewhere.

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