NES 3.6/process CPU Hogging

[Jeff Bireley]

We are having a problem with NES 3.61 running on a E6000 Sun box running
Solaris 2.6. The box has 12 CPU's and 6 GB memory. We are using JRun
2.X to handle Java servlets with 2 instances running to divide up short
and long running tasks.

Recently the system has started to slow to a crawl doing anything that
uses one of the java instances. The symptoms are that web page requests
are serviced correctly (meaning quickly), and when running Glance, one
of the java instances runs consistently over 100% of a CPU. When the
system is running correctly the average CPU for that java instance is in
the 30% range.

We know that there were no application software changes that happend
around the time of the first occurence of the problem, and we are fairly
certain (but not totally sure) about any system level patches occurring
at that time.

We have had one other instance where the httpd daemon itself was the
process that seemed to be consuming all the time, but normally it
appears to be mostly one of the java instances (Java 1.2.03).

We have reason to believe (but haven't completely dismissed) that JRun
is probably not the cause of the problem.

I'm posting this to the newsgroup since I noted there was a item
regarding CPU process hogging in the FAQ's.

Any help or even things to took at would be VERY greatly appreciated.

Thanks,

Jeff Bireley
Sr. Bus. Appl. Analyst
Courier Route Planning Development
FedEx Services