Interesting analysis of linux kernel threading by IBM

[Horst von Brand]

"Davide Libenzi" <davidel en maticad.it> said:

[...]

> my patch has great performance ( 80% with 300 tasks ) with a lot of tasks
> and low overhead ( 1.5% with 2 tasks ).
> And my patch has 0.00 optimizations about CPU fetches and Co.
> IMVHO 1-1.5 % of overhead is a price the we can afford given the performace
> with many tasks.
> My patch equals the current implementation with 8 tasks.

So it is a net loss. This machine here (a personal workstation) has
typically 1 to 3 running tasks.

Hondreds of tasks is just not a typical (perhaps even realistic)
workload.
-- 
Dr. Horst H. von Brand                       mailto:vonbrand en inf.utfsm.cl
Departamento de Informatica                     Fono: +56 32 654431
Universidad Tecnica Federico Santa Maria              +56 32 654239
Casilla 110-V, Valparaiso, Chile                Fax:  +56 32 797513

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