Linux scheduler, overscheduling performance, threads

[Bill Huey]

> And what happens when someone comes along with a performance issue. Do you
> try and cope with excessive threads, 20Mb of kernel overhead, trashed
> caches or do you put your thinking hat on. In java you have very poor AIO
> facilities which doesnt help (I believe the newest java stuff fixes this ?)

> Alan

The IO classes are the weakest part of Java and are largely a joke since it's
excessively constrained to a very strict OOP model. This has the tendency to
over constrain programming concepts to an oversimplicistic view of IO, therefore
crippling Java in this area.

This might be helpful:

http://java.sun.com/aboutJava/communityprocess/jsr/jsr_051_ioapis.html

I might be incorrect since I don't track Java any more, but they are just
moving to a select()/poll() IO model now, which is fairly pathetic IMO.

Java in general is an under appreciate technology for it's OOP cleanliness
and modularity, but horribly incomplete in many areas.

bill


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