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Technology Stocks : All About Sun Microsystems
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To: JC Jaros who wrote (23383)11/25/1999 2:33:00 AM
From: Robert  Read Replies (2) of 64865
 
To the best of my knowledge, I've not heard that Linux
being POSIX compliant. Others may know better on this....

Java can be developed on any machine to generate bytecode
which is platform and OS independent. However, the quality
with which the Java Virtual Machine is implemented can be
quite different due to the implementation of the JVM, the
underlying OS, and the underlying hardware. In the limit,
the JVM cannot be any better than the OS and hardware on
which it is implemented without replicating and replacing
basic OS functionality. TowerJ achieved their performance
for example by sidestepping the default threads of Linux.

I do not seriously believe that Windows would be able to
run as many java connections as Solaris. The latest version
of Solaris (8) has been geared towards both the internet and
the datacenter, requiring persistent open connections and
threads to service all those web requests. By implication,
a JVM written to Solaris 8 should also be able to take
advantage of both those improvements. Realistically one
would expect that Sun must have this in mind as Java Servelets are one of the easiest way to write server side
scripts. Nicholas Petreley in one of his articles on Win2K
compares the threading models of Win2K and Solaris and
concludes that Solaris' M*N model was far more flexible for
large jobs, but did concede that at the low end that Win2K
has a slight performance edge. Take the low end far enough
and Linux is the better choice yet again....
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