Not sure what help I can be with this, but we're running Java on RH7 with
the following config:
Glibc-2.2-12
Apache 1.3.14-3
ApacheJServ 1.1.2-1
Sun JSDK 2.0
IBM Java2 1.3 JDK/JVM
or
Sun Java2 1.3 JDK/JVM
We've run under both IBM and Sun's JDK/JVM combos with no problems. We use
IBM for single processor installs, and Sun for SMP since IBM doesn't support
SMP. We're also using Sun's JSDK 2.0 because the one that comes with
ApacheJServ is a bit buggy.
The major difference we can see, is that IBM is strictly native
threads...but the new Sun JDK/JVM is a mixed threads implementation.
No real problems getting this installed...it all seemed to be snap.
We're currently testing with RH Wolverine - 2.4.1 kernel and glibc-2.2.2-3.
We did have to rollback to the i386 version of the glibc in order to get
Java to work properly on Wolverine. The i686 (installed by default) version
would not run. I'll let you know what we find.
Hope that provided a little insight.
Philip
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Michael R. Jinks
Sent: Wednesday, March 14, 2001 4:00 PM
To: [EMAIL PROTECTED]
Subject: java, RH7, and native threads
We've started to roll out RH7 on newly-deployed machines. Recently
we've discovered that the version of glibc shipped with RH7 (glibc-2.2)
has a bug which causes javac to return 0 values even if subprocesses
have encountered errors. A bug report in the JDK knowledge base lists
"upgrade to Red Hat 7.1" as the solution.
Well okay, so until 7.1 actually comes out, I thought I'd apply the
latest glibc (2.2.2). That fixed the problem with javac, but broke java
itself. From scratching my head over strace output, it seems as though
java now uses native threads instead of green threads, that doesn't
work, and java ends up stuck running nanosleep(2) forever, waiting for
one of its threads to check in.
So we've rolled back to glibc-2.2 and instructed all of our developers
to run javac with the -classic argument, which seems to avoid the
problems we're having but results in a significant performance hit.
[pausing to breathe]
Now my question: is anybody successfully using Java with native threads
on RH7? Any hints you could pass along?
--
Michael Jinks, IB // Technical Entity // Saecos Corporation
Opinions expressed above are my own, and not those of my employer.
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