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Enhancement
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Resolution: Done
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Major
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7.4.12.GA
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False
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None
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False
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Tags with optional attributes with null values can see degraded performance requests predominantly in ScopedAttributeELResolver's ImportHandler.resolveClass calls:
"default task-102" #356 prio=5 os_prio=0 tid=0x00005570e3b18800 nid=0x1fe5a runnable [0x00007f236e69e000] java.lang.Thread.State: RUNNABLE at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at javax.el.ImportHandler.getClassFor(ImportHandler.java:169) at javax.el.ImportHandler.resolveClassFor(ImportHandler.java:145) at javax.el.ImportHandler.resolveClass(ImportHandler.java:109) at javax.servlet.jsp.el.ScopedAttributeELResolver.getValue(ScopedAttributeELResolver.java:93) at org.apache.jasper.el.JasperELResolver.getValue(JasperELResolver.java:110) at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:91) at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:183) at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:917)
So overhead expected from EAP 7+s el spec compared to EAP 6 without the ImportHandler.
This seems an issue addressed previously in Tomcat:
https://bz.apache.org/bugzilla/show_bug.cgi?id=57583
https://github.com/apache/tomcat80/commit/63665340bb6fb123d93627cf4eac62dadd1545ab
https://github.com/apache/tomcat80/commit/b69ed7e5f1bfd20ac09f8ea70e77731e1f1fcb44
Or similar to WFLY-10653's ImportHandler overhead. So like WFLY-10653's fix, performance coudl benefit from some caching here.
- incorporates
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- Closed
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- is incorporated by
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JBEAP-25803 (7.4.z) Upgrade jboss-jsp-api_2.3_spec from 2.0.0.Final-redhat-00001 to 2.0.1.Final-redhat-00001
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- Closed
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- is related to
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- Open
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- Open
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