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https://issues.apache.org/jira/browse/AXIS-2852?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Francis Hitchens updated AXIS-2852:
-----------------------------------
The fix is trivial...
*** ClassCache.java.orig 2011-06-11 11:49:54.643940575 -0500
--- ClassCache.java 2011-06-11 11:51:06.164437871 -0500
***************
*** 83,88 ****
--- 83,89 ----
if ((jc == null) && (cl != null)) {
// Try to load the class with the specified classloader
Class cls = ClassUtils.forName(className, true, cl);
+ registerClass(className, cls);
jc = new JavaClass(cls);
}
return jc;
Results are non-trivial, on a system that was utilizing 70% CPU, after the fix
CPU utilization was reduced by 30%.
> org.apache.axis.utils.cache.ClassCache not caching classes
> ----------------------------------------------------------
>
> Key: AXIS-2852
> URL: https://issues.apache.org/jira/browse/AXIS-2852
> Project: Axis
> Issue Type: Bug
> Components: Basic Architecture
> Affects Versions: 1.2, 1.3, 1.4, 1.5
> Environment: Any
> Reporter: Francis Hitchens
>
> org.apache.axis.utils.cache.ClassCache.lookup() is used to locate service
> classes cached in the classes internal HashMap, classCache. If a class is not
> found, then lookup() calls ClassUtils.forName() to load the service class.
> The service class is then returned to lookup() and stored in another cache in
> the JavaClass object.
> At no point is the service class added to the ClassCache HashMap classCache.
> Consequently every single Web Service request, needs to call the class loader
> to load and instantiate a service object. Under light load this is not
> noticeable. Under heavy load on a WebLogic server this behaviour leads to the
> JEE container filling up with threads stuck on "waiting for monitor entry" on
> the ClassUtils.forName() call as the class loader thread is synchronized .
> ClassCache.lookup() needs to be modified to add the service class to the
> classCache HashMap.
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