Hello,
We have formally evaluated the different virtual machines available for
Linux
and thought it would be worthwhile to share the results with the Linux
community.
The following tests were conducted on an unloaded dual processor Pentium
II/400mhz running Debian GNU/Linux (kernel 2.2.8). Each benchmark
execution was
repeated ten times. We discarded the maximum and minimum results, and
averaged
the remaining 8 execution times.
The first 9 benchmarks come from the specJVM98 benchmark suite
(http://www.spec.org), and the last two benchmarks come from our own
private
collection.
base(s): time in seconds to run under blackdown jdk 1.2, pre-release 2,
with jit.
sunint: speedup (base time/this time) of the blackdown jdk1.2,
pre-release 2,
with no jit.
borjit: speedup of blackdown jdk1.2, pre-release 2, with the Borland jit
installed (http://www.borland.com)
ibmjit: speedup of the AlphaWorks IBM 1.1.8 JIT
(http://www.alphaworks.ibm.com)
A # indicates that the run failed validity checks.
base(s) sunint borjit ibmjit
check .84 - 1.33 - 1.25 # 1.75 -
compress 65.61 - .15 - 1.07 - 2.42 -
db 148.43 - .57 - .98 - 2.98 -
jack 64.50 - .43 - 1.35 - 3.65 -
javac 75.67 - .54 - 1.21 - 2.51 -
jess 50.86 - .47 - 1.44 - 2.67 -
mpegaudio 54.61 - .15 - 1.19 # 2.32 -
mtrt 40.32 - .41 - 1.78 - 2.79 -
raytrace 55.56 - .45 - 1.92 - 3.04 -
sablecc-w 42.57 - .58 - 1.06 - 2.32 -
soot-j 132.93 - .69 - 1.25 - 2.26 -
The conclusions are fairly obvious. Now, if only IBM had a jit for
1.2... We
also evaluated shujit and tyajit, but they were unable to run most of
the
benchmarks correctly. Stay tuned for a comparison of NT Java Virtual
Machines in
the near future, on the same hardware.
Permission is granted to re-distribute this e-mail in any medium as long
as it
remains unchanged. All trademarks belong to their respective owners.
To everyone working on Java for Linux: keep up the great work! :)
Best regards,
Raja Vallee-Rai ([EMAIL PROTECTED])
Sable Research Group
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