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How do I turn of JIT? What is JIT? I am running the IBM version. It
seems to load seperate instances of java instead of Blackdown running
what seems like one instance of java_ns.
Thanks a lot for the help.
Keith Vance
Nick Bauman wrote:
> ----------------------------------------------------------------
> BEFORE YOU POST, search the faq at <http://java.apache.org/faq/>
> WHEN YOU POST, include all relevant version numbers, log files,
> and configuration files. Don't make us guess your problem!!!
> ----------------------------------------------------------------
>
> With glibc 2.1 and JIT turned OFF, IBM JDK is very
> fast and very stable, more so than Blackdown in my
> findings.
>
> JIT has deterministic garbage collection issues with
> the IBM JDK on Linux. Note that the same IBM JDK for
> Windows NT does not have these issues with JIT turned
> on.
>
> I'll bet that if you run IBM's JDK with green threads
> and JIT turned off it will still run faster _and_ more
> stable than the Blackdown JDK, but that's just a
> guess.
>
> For myself, I won't be considering Java 2 on Linux
> until JDK 1.3 is ported and out of beta, but that's
> just me.
>
> > >
> > > You are running JDK 1.1.7 from Blackdown, java_ns
> > is
> > > the green threaded version of the jvm under this
> > port.
> > > You should, instead, use IBM's 1.1.8 JDK for Linux
> > and
> > > run it using native threads. Your servlets will
> > run up
> > > to 400% faster and the IBM JDK is a lot more
> > stable, too.
> > >
> > Hi Nick,
> >
> > you're right in that the IBM JDK blasts away
> > blackdown's 1.1.7
> > but we've experienced a lot of problems with the
> > linux threads
> > this jvm is using. They don't seem to be cleaned up
> > properly
> > and the jvm slowly dies as a result.
> > We're running redhat 6.1 on an pentium 550 with
> > apache 1.3.9
> > and jserv1.0
> > After we'd started using the green threaded version
> > of blackdown's 1.1.7
> > our problems disappeared and after switching over to
> > blackdown's 1.2.1
> > it even was speedy enough.. The system has been up
> > and running for a
> > respectable 5 days now without trouble..
> >
> > cheers,
> > lein
>
> =====
> # Nick Bauman
> # Technical Programmer
> # http://webhelp.com
> # real people, real answers, real time
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