hi Edward,
I've been having similar problems doing load testing
with standalone Tomcat 3.2.1 with the 2.2.16 kernal
with glibc2.1.3-15.
I downloaded the most recent build of IBM's VM,
cx130-20010207 and have been having much better
results as far as VM stability is concerned. I ran my
test on a uniprocessor kernal and got great results.
Changing to the SMP kernel, the VM's still stable, but
I'm getting a lot of NullPointerExceptions. I'm
looking into that now, I think it could be a Tomcat
problem though.
bill
--- Chong Yu Meng <[EMAIL PROTECTED]> wrote:
> Hello Edward :
>
> I believe your glibc version is causing the problems
> you are seeing. I never
> had any luck with glibc2.2 on my Caldera OpenLinux
> eDesktop 2.4 box. On the
> IBM Java on Linux newsgroup, someone claims to be
> successful using the i386
> version of glibc instead of i686, and I seem to
> remember someone on the same
> newsgroup saying that Red Hat has issued a fix for
> it.
> Hope this helps. For myself, I am still using
> glibc-2.1.3.
>
> Regards,
> Pascal Chong
>
>
>
> ----- Original Message -----
> From: "Edward MacGillivray" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Friday, March 23, 2001 8:35 AM
> Subject: Re: Linux IBM JDK + Tomcat + SMP hangs
>
>
> > On Sun, 7 Jan 2001 22:42:18 -0500
> > "brien" <[EMAIL PROTECTED]> wrote:
> > > Hi,
> > >
> > > I've been having a really tough time to say the
> least
> > > trying to get the
> > > IBM JDK 1.3 to work on an SMP machine under
> linux. I
> > > don't think my
> > > problem is unique. The JDK hangs, consuming 99%
> of the
> > > CPU.
> > >
> > > >From what I can tell, this problem is specific
> to the
> > > IBM JDK 1.3 on SMP
> > > machines. I've read just about every message on
> the ibm
> > > linux java
> > > newsgroup, and the typical solution offered is
> always to
> > > install
> > > glibc 2.1.3-21. Without doing this I had
> instant hangs
> > > as soon as I ran
> > > tomcat. After updating glibc, the hangs take a
> little
> > > while to occur, but
> > > they are still present and persistent.
> > >
> > > Unfortunately, I'm also bound to using DB2 on
> the
> > > database side, and
> > > IBM tech support has stated that they do not
> support
> > > sun's jdk.
> > >
> > > If anyone can help me out I'd greatly appreciate
> it.
> > >
> > > my environment is:
> > > dual p3/866 + 512mb (dell poweredge 2450)
> > > redhat linux 6.2
> > > kernel 2.2.16 SMP
> > > glibc-2.1.3-21
> > > apache tomcat 3.2.1 (also tried 3.1.1)
> > >
> > > IBM JDK:
> > > java version "1.3.0"
> > > Java(TM) 2 Runtime Environment, Standard Edition
> (build
> > > 1.3.0)
> > > Classic VM (build 1.3.0, J2RE 1.3.0 IBM build
> > > cx130-20001124 (JIT enabled:
> > > jitc))
> > >
> > > brien
> >
> > Has anyone else had this problem? because it
> appears as
> > though I am having it too. I have search my
> archive of
> > Tomcat-User posts and the web for information on
> Tomcat
> > hanging under linux SMP. I found the above post
> but no
> > replies to it.
> >
> > I have successfully installed the webapp I have to
> three
> > different single processor computers but the one I
> want it
> > on is multi proc and does not want to work. I
> have been
> > working with Tomcat 3.1 on all of the single proc
> boxes and
> > initially used 3.1 on the multi proc. The
> application was
> > able to function just as it had on the other boxes
> but
> > within a few minutes the application had hung and
> was not
> > responding to jsp or servlet requests. When the
> application
> > got to this state though the Tomcat program was
> unable to
> > stop itself, so I had to start killing processes.
> >
> > I then figured that possibly it was 3.1 that had a
> problem,
> > so I went and got Tomcat 3.2.1. However, this was
> pretty
> > much a step backward, because with 3.2.1 the
> webapp is never
> > able to work. What's worse is that running the
> Tomcat
> > shutdown script, even immediately after running
> the startup
> > script, Tomcat is unable to stop itself.
> >
> > I can't say that I have much experience with
> Tomcat 3.2.1,
> > however the mod_jk.log file indicates that it is
> finding a
> > worker and the web browser accessing the webapp
> spins until
> > apache times out. I am confident that Apache is
> configured
> > properly.
> >
> > The box's environ is
> > 3 * p-pro/200 + 256Mb
> > Redhat Linux 6.2, kernel 2.2.14smp
> > Apache 1.2.19
> > Tomcat 3.2.1 using mod_jk (also happens with 3.1
> using
> > mod_jserv)
> > glibc 2.2.2
> >
> > thanks
> > mac
>
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