The short question: does anyone know if Java is running native or
through Rosetta in the Intel-based macs?
The short answer: there is no way to start JVM in process running under
Rosetta. See Universal Binaries documentation on developer.apple.com.
The longer version: Can anyone provide (or make an educated guess as to)
the comparative performance of Java on the new Intel-based iMac? In my
case, I'm using maven to run unit and integration tests. On a dual 2.7
G5, they take about 1:10 (m:s), and about 2:00 (m:s) on a 2 GHz iMac G5.
I'm assuming some gains will be made simply from having two processors
available, but these tests are single threaded (there's a difference of
seconds between a 500 MHz G4 Powerbook and dual 500 MHz G4 PowerMac with
both coming in just under 5 minutes).
I'm trying to determine if the new iMac is a good buy for my development
work, of if I should wait until the PowerMac (Mactel?) machines are
available.
The performance of the Apple's JVM for Intel-based Macs shall be
comparable to the performance of Sun's JVMs since both use same
bytecode-to-native-code compiler - HotSpot (client/server). On Wintels
the performance is sensitive to CPU frequency (if you have enough RAM,
say 1GB) more than to other parameters of your system.
If you would ask me whether I would buy those iMacs for development I
would say 'no'. The native resolution (1440x900) doesn't suit well IMO,
there are too few adjustments for monitor (tilt only), and the LCD
matrix has too narrow angle of view.
--
Illya Kysil
-----------------------------------------------------------------------------
Shakespeare / King Henry IV
GLENDOWER I can call spirits from the vasty deep.
HOTSPUR Why, so can I, or so can any man;
But will they come when you do call for them?
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