Interesting analysis of linux kernel threading by IBM

[Horst von Brand]

Peter Rival <frival en zk3.dec.com> said:
> Mark Hahn wrote:

[...]

> Agreed that AIM is not representative directly of what "most" systems do.
> Maybe a few.  But that's one of the reasons that we can play with the
> workfiles - to better simulate something that might happen in real life.

"Might happen" just isn't enough for performance tuning. It has to happen,
and also be frequent enough so it is worthwhile to worry about.

[...]

> > without proof that this is an issue, it's not an issue.
> > seriously, I have a hard time thinking of why a massive DB or webserver
> > would ever have large numbers of runnable processes (not blocked on IO.)

> Bad examples.  *shrug*

The _only_ examples given so far are bad examples, as you say. So this
would mean that this really isn't an issue.
-- 
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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