As far as Mark Reinold talk goes at JavaOne, the performace of Memory Maps
and Direct Buffers in Java is almost there. I agree that it may never hit
the exact numbers of OS specific IO. At the same time, I don't want to get
portability for free either. I will be a proud Java Programmer if I can get
95% of performance than what OS provides and java.nio is a big step in this
direction. In Peter Hagar words, "I am really tired of people saying Java is
slow". More often than not, a particular code is slow because of a design
flaw, bad data structure or algorithm choice or some other piece of an
application is CPU bound. Unfortunatlly, all the times Java gets the blame
and the people who do the mistake get away with this.
Strange but true!
Regards,
Chandra
The statements and opinions expressed here are my own and do not necessarily
represent those of Oracle Corporation.
-----Original Message-----
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]On Behalf Of Peter
Huber
Sent: Friday, July 13, 2001 3:02 AM
To: [EMAIL PROTECTED]
Subject: [OT]Re: getLastModified(), was:Re: url mapping - Java nio
>
>
> In the future, the new (1.4) java.nio.* packages mean
> that it should be possible to write an HTTP server just
> as fast as Apache in pure Java. But we're not quite there
> yet...
>
* Sorry for being off topic *
Sorry, but I think you overestimate the nio package a bit.
You can check out the new features with the beta of 1.4
As far as I get nio, it does not give you asynchronous
IO the full scale like winnt and unix derivates provide
with their systemcalls (e.g. completion queues for
asynchronous operations are missing)
Therefore I think that c/c++ solutions that take advantage
of those features are and will always be faster than java,
because they are closer to the machine in any aspect.
And there are also portable c++ solutions like the great
ACE-Framework that are not locked to just one platform.
(can't recall the 'inventors' name, was it Doug Schmid)
Don't get me wrong, I'm an enthusiastic java user and I clearly
see and like the advantage of nio package over io, but it's
'only' a little step further.
Peter
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