Peter Schuller wrote:
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> > I have been comparing the performance of jdk 1.1.7v1a and 1.2pre-v1
> > and have found that 1.2pre-v1 is app. 60% slower than 1.1.7v1a with
> > native threads and TYA. I get the same difference when I turn jit off
> > and use green threads. In all cases the CPU is 100% saturated by
> > java. I'm running RedHad 5.2 and glibc. Before I dig deeper into this
> > I would like to know if somebody else has compared the performance
> > or whether this is something that will be fixed when 1.2 on Linux is
> > officially released?
>
> I'm not sure about the 60% (if it's more or less), but I can tell you that I am
> seing the same thing here. The only exception seems to be these small benchmarks
> (notably the Sieve one that comes with TYA) - JDK 1.2 is faster there. But in
> all "real world" tests I've made, JDK 1.2 has been about as fast, or, usually,
> significantly slower than JDK 1.1.7.
>
> / Peter Schuller
>
I am happy that someone else also observed (and reported) this nasty behavior after
all.
I've been grumbling about it sometime ago (you could check the archives), but there
was no particular interest.
Just to make you feel better :
<strong>
jdk117 with tya is 2-3 times faster than jdk1.2 with sunwjit for heavy
computations.
</strong>
I don't know whether this is due to the premature nature of jdk1.2-pre1 or due to a
slowdown inherent to the java2 platform. It wiuld be way-too-bad if the latter was
the case.
At any rate, I do stick with jdk117 for the moment ;-}
Dimitris
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