If you're getting real core dumps (and yes, I'd say a Dr Watson
qualifies!) then it's not a jBoss problem. No Java code should be capable
of generating a core dump or Dr Watson - if it does, then there's a
problem with a native library (you're not using native code, right?) or
the JVM.
Aaron
On Mon, 16 Oct 2000, Derek Last Name wrote:
> well, the result of running this code is that the jvm
> dies and i get a dr. watson on nt, does this classify?
>
> --- Andrius Juozapaitis <[EMAIL PROTECTED]>
> wrote:
> > IMHO term CD - "core dump" gets misused for
> > "exception stack trace" quite
> > often lately. CD happens under certain conditions in
> > *nixes when jvm can't
> > handle something, resulting in killing the java
> > process and saving the
> > memory dump to a file. analogous situation under win
> > is "..illegal operation
> > ..blabla.. will be shut down". .
> > _exceptions_ in jboss are usually seen in a server
> > log and inform on
> > exceptional situations in the program logic. in
> > certain situations they can
> > be recovered from.
> >
> > 0.02 cents,
> > --andrius
> >
> >
> > ----- Original Message -----
> > From: "Derek Last Name" <[EMAIL PROTECTED]>
> > To: "jBoss" <[EMAIL PROTECTED]>
> > Sent: Monday, October 16, 2000 1:57 PM
> > Subject: RE: [jBoss-User] Core dump: ouch!
> >
> >
> > > i have some code that will core dump jboss just
> > about
> > > every time i run it within 5-15 minutes. i call
> > it
> > > using 4 dos prompts running the same code. the
> > code
> > > does a ejb create. each dos prompt i run uses 10
> > > threads, so, i guess im using 40 clients all doing
> > ejb
> > > creates at the same time. each client does a
> > delete
> > > all in the table, then does 10 inserts. i have my
> > try
> > > catch block so that when i get duplicate inserts
> > it
> > > will ignore the error, and just keep on going. i
> > did
> > > this since this is the first ejb example i had in
> > my
> > > book, this is all i have figured out how to do so
> > far,
> > > and i wanted to test it out under load to see if
> > what
> > > kind of performance i would get. i am quite
> > > underwhelmed and disappointed to say the least.
> > maybe
> > > im doing something wrong in my code. yes, i
> > realize
> > > most applications wont be doing this sort of load.
> > > anyways if you want the code let me know. like i
> > said
> > > everytime i run it, i get a core dump in jboss.
> > >
> > >
> > > --- marc fleury <[EMAIL PROTECTED]> wrote:
> > > > the only situation where we have seen the core
> > dump
> > > > is on shutdown where the
> > > > JVM barfs on a "unexpected thread" bla bla...
> > then
> > > > the dump goes to file and
> > > > can be quite high.
> > > >
> > > > I have personnaly never seen a CD under any
> > other
> > > > circumstances (but I stand
> > > > to be corrected ;-), not even on the heavy heavy
> > > > loads we are running right
> > > > now (again 200thread, 150,000 beans all in
> > parallel
> > > > and stable :)))))
> > > >
> > > > marc
> > > >
> > > >
> > > > |-----Original Message-----
> > > > |From: [EMAIL PROTECTED]
> > > > |[mailto:[EMAIL PROTECTED]]On
> > Behalf
> > > > Of Tom Cook
> > > > |Sent: Friday, October 13, 2000 1:00 AM
> > > > |To: [EMAIL PROTECTED]
> > > > |Subject: [jBoss-User] Core dump: ouch!
> > > > |
> > > > |
> > > > |Just a warning:
> > > > |
> > > > |Just discovered that, under some circumstances,
> > > > jBoss running under
> > > > |Sun's 1.3 release JDK for linux can core dump
> > in a
> > > > large way (it got
> > > > |to 116Mb before I killed it). When it's
> > running
> > > > from an NFS mount
> > > > |this drags my box to it's knees with network
> > > > congestion.
> > > > |
> > > > |Tom
> > > > |--
> > > > |Tom Cook - Software Operations
> > > > |
> > > > |"We rarely find that people have good sense
> > unless
> > > > they agree
> > > > | with us."
> > > > | - Francois, Duc de la Rochefoucauld
> > > > |
> > > > |LISAsoft Pty Ltd - www.lisa.com.au
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