Robby Pelssers wrote:
Hi all,
we have cocoon2.1.10 running on a solaris(OS version5.8). The server
has 16G of memory and 2 processors (sparcv9 processors operating at
900 MHz). Cocoon is running on tomcat/4.1.24.
After a while we see our CPU increasing to about 94% and the system
becomes non-responsive. Could anybody point to what we look for? We
can't trace the problem back from the tomcat loggings.
Cheers,
Robby Pelssers
Are you running in a 64 bit JVM? If not, then you aren't using much of
that 16G. However, I doubt the amount of memory has much to do with this.
I experienced something similar to this a year and a half ago.
Periodically a thread would go into a loop. We had several problems that
made the problem diagnosis difficult.
The way our operations folks handled this was they wrote scripts that
were able to detect when a cpu suddenly spiked and when that happened
they immediately did a kill -3 to get a java dump and then killed the
application and restarted it. Once the other problems were fixed it was
easy to tell what the real problem was as that stack trace always showed
up in the thread dump.
HTH
Ralph
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