RE: [JBoss-user] Out of memory error

[Lex]

We found the same problem during stress testing with JBoss 2.4 Beat/ Tomcat 3.2.2 JDK1.3.1.  We had another amchine with JDK 1.3.0 that did not have the problem.  We Downgraded the problem machine to 1.3.0 and the problem went away.  Is there some explaination for this?  Is this a JBoss vs. JDK1.3.1 thing?   Regards, Mike       >        We've been experiencing memory problems here using JBoss 2.2.2 on >Sun's JDK 1.3.1 for Linux.  Switching to IBM's JDK 1.3.0-8 seems to have >solved the problem though.  If you're using 1.3.1, try downgrading to 1.3.0 >(you can try IBM, Blackdown or Sun -- I can't seem to find 1.3.0 on the Sun >website though).   >      HTH. >--- Michael R. Maraya > ---------- > From:         Jim Gloor[SMTP:[EMAIL PROTECTED]] > Reply To:     [EMAIL PROTECTED] > Sent:         Wednesday, July 11, 2001 10:14 AM > To:   '[EMAIL PROTECTED]' > Subject:      RE:  [JBoss-user] Out of memory error > > We've been consistently having this problem, too, after about 5-6 hours > (~60,000 transactions) of stress testing.  We're using JBoss 2.2.1 + > Tomcat > 3.2.1 on a Linux box with 200 MB of RAM allocated for the JBoss VM. > Here's > a specific example of the error message: > > Exception in thread "CompileThread0" java.lang.OutOfMemoryError: requested > 53687 > 0924 bytes > > We've been monitoring memory usage, and the JBoss VM was only using about > 10% of the available memory at the time of the error, so that's clearly > not > the problem. > > We'll start monitoring thread usage, as per Jim Archer's comments, but in > the meantime, does anyone have any other insights/suggestions?  We'd > actually like to start using JBoss in a production system soon, but this > could be a real problem! > > > > "JA" == Jim Archer <<EMAIL: PROTECTED>> writes: > > > > JA> Saul, watch your thread usage. jBoss will usually throw an out of > > JA> memory exception when it can't create a new thread... On Solaris, > > JA> you have a hard limit of threads. > > > > JA> I don't know if this is your actual problem, but I thought I would > > JA> mention it. > > > > I think there should be a bug open.  We've had a lot of problems with > > this on a Linux box. > > > > -- > >   Nicolai P Guba    http://www.gnu.org         http://www.frontwire.com > >                     mailto:<EMAIL: PROTECTED>     mailto:<EMAIL: > PROTECTED> > >                     GSM: +44 (0)7909 960 751   DDI: +44 (0)20 7368 9708 > > -------------------------------------------------------------------- > Jim Gloor ([EMAIL PROTECTED]) > Senior Software Engineer, Open Ratings, Inc. > 928 Commonwealth Avenue > Boston, MA   02215-1204 > (617) 582-5159 >