Probably best to take that "benchmark" with a giant grain of salt.
Without taking a look at the code, and knowing the render path in the
different JVMs, it's tough to know exactly what this is actually
measuring.
Here's some stats from my new Quad G5 with GeForce 7800:
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-93)
Java HotSpot(TM) Client VM (build 1.5.0_06-55, mixed mode, sharing)
Version 1.0.0
Ave:56.302 rpm
Max:57.69 rpm
Min:55.27 rpm
TotalRevolutions: 10 times
java version "1.4.2_09"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_09-232)
Java HotSpot(TM) Client VM (build 1.4.2-54, mixed mode)
Version 1.0.0
Ave:91.821 rpm
Max:96.23 rpm
Min:88.56 rpm
TotalRevolutions: 11 times
java version "1.3.1_16"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1_16-
root_1.3.1_050718-17:36)
Java HotSpot(TM) Client VM (build 1.3.1_09-82, mixed mode)
Version 1.0.0
Ave:675.586 rpm
Max:5714.28 rpm
Min:115.71 rpm
TotalRevolutions: 104 times
On Jan 16, 2006, at 1:56 PM, Greg Guerin wrote:
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
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Java-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/java-dev/email@hidden
This email sent to email@hidden
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Java-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/java-dev/email@hidden
