Interesting analysis of linux kernel threading by IBM

[Ian Soboroff]

Phillip Ezolt <ezolt en perf.zko.dec.com> writes:

> > Hondreds of tasks is just not a typical (perhaps even realistic)
> > workload.
> 
> Yes it is.  
> [...]
> Or a highly threaded application.

didn't Larry McVoy make a point a while back (which relates well to
the IBM paper), that if your application depends on huge numbers of
threads, you're always going to keep bumping up against the scheduler?
a lot of people throw lots of threads at a problem and it can really
be bad design.

in the vast majority of cases, i suspect it's easier and probably
better to redesign the app than redesign the scheduler.  that said,
the improvements already done are quite good and needed.

ian

-- 
----
Ian Soboroff                                       ian en cs.umbc.edu
University of MD Baltimore County      http://www.cs.umbc.edu/~ian

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