| From: | Alan Swithenbank |
| Date: | 22 Sep 2000 at 18:53:32 |
| Subject: | Re: AMIOPEN: XML and Java, a uncharted territory? |
On Fri, Sep 22, 2000 at 05:25:51PM +0100, John Niclasen wrote:
> > So garbage collection can be done in the background, but
> > you need some clever minds to implement it, and it seems,
> > we got that. :)
>
> Several months ago I tested Tao's JVM with a program by Thomas Rokicki
> (AmigaTeX [for many years, the best implementation of TeX, by far],
> dvips, Maple for Amiga, etc.). He wrote it to reproduce a problem with
^^^^^^^^^^^^^^
Tom Rokicki has done a LOT of good things, and seems quite a nice guy
(I've only e-met him), but to keep the records straight, I'm pretty
sure the Maple port was primarily Willy Langeveld's work, though could
be both were involved (they certianly know each other).
> Sun's collector, i.e. the fact that the load of the garbage collector was
> not evenly distributed in time: its CPU usage would stay quite low for
> some time, then it would get quite high for a short while, then low
> again, etc. (you can find more details at the JDC, it's one of the long
> standing bugs). That's quite unfortunate for embedded and/or realtime
> applications, as it can introduce "hiccups". The problem seems to be
> still there with recent versions of Sun's JVM, although things are
> better, because the collector is faster and thus "hiccups" have become
> harder to notice.
>
> Anyway, I was delighted to see that the program ran just fine with Tao's
> JEngine, as the latency was pretty much constant. No wonder, considering
> it is the JVM that Scott McNealy used to demonstrate Java on a phone
> (it's funny that it uses not even one line of Sun's code ;) ).
>
> --
> "Producing satire is kind of hopeless because of the literacy rate of
> the American public." (Frank Zappa)
> Rudi Chiarito SGML/XML, user interface, i18n Amiga Inc.
> rudi@amiga.com http://amiga.com/
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>
--Alan
<swithenbank@acm.org>
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