Re: high load & poor interactivity on fast thread creation

[Ray Bryant <raybry@austin.ibm.com>]

The IBM implementations of the Java language use native threads --
the result is that every time you do a Java thread creation, you
end up with a new cloned process.  Now this should be pretty fast,
so I am surprised that it stalls like that.  It is possible this
is a scheduler effect.  Do you have a program example you can
share with us?

Also, it is a little old now (by Internet standards) but you 
might take a look at this paper we did at the beginning of 
the year: 
 
http://www-4.ibm.com/software/developer/library/java2/index.html

Arnaud Installe wrote:
> 
> Hello,
> 
> When creating a lot of Java threads per second linux slows down to a
> crawl.  I don't think this happens on NT, probably because NT doesn't
> create new threads as fast as Linux does.
> 
> Is there a way (setting ?) to solve this problem ?  Rate-limit the number
> of threads created ?  The problem occurred on linux 2.2, IBM Java 1.1.8.
> 

-- 

Best Regards,

Ray Bryant
IBM Linux Technology Center
raybry@austin.ibm.com
512-838-8538
http://oss.software.ibm.com/developerworks/opensource/linux

We are Linux. Resistance is an indication that you missed the point.

"...the Right Thing is more important than the amount of flamage you need
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--Eric S. Raymond
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