Pelladi Gabor created OGNL-224:
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Summary: Performance - Locking and performance problem with
OgnlRuntime.findParameterTypes
Key: OGNL-224
URL: https://issues.apache.org/jira/browse/OGNL-224
Project: Commons OGNL
Issue Type: Improvement
Components: Core Runtime
Affects Versions: 3.0
Reporter: Pelladi Gabor
Priority: Minor
I am using struts2 and under heavy load (around 100 threads) many threads are
in BLOCKED state because of OgnlRuntime.findParameterTypes(). The actions we
use have a generic superclass like:
public class PersonalCaptureAction extends DataCaptureAction<PersonalDTO>
OGNL handles this very bad, it enters
synchronized (_genericMethodParameterTypesCache)
all the time, at every property access of the Action. A possible workaround is
to introduce another layer of superclass that is not generic.
I know that in current OGNL trunk (4.0-SNAPSHOT) caching has been rewritten,
but Struts2 is using 3.0.5, and maybe it could be fixed as 3.0.6 in the git
tree I found:
https://github.com/jkuhnert/ognl
I will attach a patch and a testcase.
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