TC5 / Solaris CPU usage

[David Parfitt <di...@yahoo.com>]

Hi -
  I'm having a problem using Tomcat 5.0.16 on Solaris 9. 
We've just upgraded to Tomcat 5 from 4.x and are having a problem
with CPU usage. After we start our app, the CPU 
load goes to 50% and never goes below this number.
Does anyone else have any experience with this problem?
Running truss shows that Java is in a tight loop doing a yield().
(We don't have any code that uses threads outside of the Tomcat
code, and we aren't in an infinite loop anywhere).
 
We are using:
java version "1.4.2_04"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_04-b05)
Java HotSpot(TM) Client VM (build 1.4.2_04-b05, mixed mode)

JAVA_OPTS="-server -Xms300m -Xmx1000m"
export JAVA_OPTS

I've also tried using these in JAVA_OPTS:
-Xconcurrentio  -Xincgc 
 
SunOS foo 5.9 Generic_112233-11 sun4u sparc SUNW,Sun-Fire-280R
 
Any help would be greatly appreciated!
 
Cheers -
Dave

		
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