Tsutomu Yano wrote:
>I don't know a JVM on Intel Mac is Apple's or Sun's, but I found on a
>japanese site that graphics performance of intel Mac's JVM has been
>incredibly increased.
Graphics performance in Java has always depended on the video/graphics
hardware. Search the archives for a long history of past complaints about
iBooks and PowerBooks with slow graphics, even when they have fast CPUs.
When I ran the same tests on my desktop 500 MHz G4, I frequently saw
distinctly better performance, sometimes 5X or more, even when my CPU was
outpaced by 2X or more.
The Intel-based iMac's video/graphics specs are quite good, and its
front-side bus is also several times faster than any prior Mac laptops.
FSB-speed is another significant barrier to laptop performance.
>New JVM on intel core duo is faster than a Sun's JVM on AMD Athlon64 3200+ !!
Without knowing what the video/graphics hardware was in each of the test
cases, it's difficult to draw any solid conclusions about Java. Yes, the
graphics are measurably and consistently faster, but it might have little
or nothing to do with the JVM itself, or even the Intel CPU.
On Mac OS X, this Terminal command tells you CPU and FSB speed, among other
things:
sysctl hw
Or to see it nicely sorted:
sysctl hw | sort
The 'sysctl' command won't list video/graphics hardware identifiers, so use
System Profiler for that.
-- GG
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