0001723: JSP: ResourceBundle caching

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Category

Severity

Reproducibility

Date Submitted

Last Update

0001723

[Resin]

minor

always

05-01-07 09:06

05-15-07 13:28

Reporter

ferg

View Status

public

Assigned To

ferg

Priority

normal

Resolution

fixed

Platform

Status

closed

Projection

none

OS Version

ETA

none

Fixed in Version

3.1.1

Product Version

Product Build

Summary

0001723: JSP: ResourceBundle caching

Description

(rep by Fred Douthit)

We are having what looks like resource contention for resource bundles. It appears that we are using the resin implementation of bean:message. What I am seeing appears to be resource contention load bundles from the file system which should have been cached. See the section Relevant Information 1st, but also, SERVER-WIDE STACK DUMP, for a more complete thread dump. What I am looking for is an idea why this is happening but more importantly, how I can resolve it.

Thanks!

Fred

Relevant information
· We are using resin-pro-3.0.14.
· Performance testing found MANY threads in the application appear to block on:
java.lang.Class.forName0 (native method) - see stack trace attached.
· The method is native. It is possible that there is a critical section which is causing the code to single thread through this code. This behavior appears to be intrinsic to Sun's implementation.
· The underlying issue is that the code reads and parses ApplicationResources.properties and MoreApplicationResources.properties again and again.
· While the code is designed to cache the file contents it doesn't.
· These files are loaded from the file system.
· These files are referenced from between 0 and more than 60 times per jsp page.
· A typical reference looks like the following:
<bean:message key="custgroup.condition.label.abandcart"/>
· They contain name value pairs which look like the following:
tools.tax.state=State

Fraction of stack trace
  [1] java.lang.Class.forName0 (native method)
  [2] java.lang.Class.forName (Class.java:242)
  [3] com.caucho.jsp.BundleManager.getBaseBundle (BundleManager.java:202)
  [4] com.caucho.jsp.BundleManager.getBundle (BundleManager.java:144)
  [5] com.caucho.jsp.PageContextImpl.getBundle (PageContextImpl.java:1,164)
  [6] com.caucho.jsp.PageContextImpl.getLocalizedMessage (PageContextImpl.java:1,133)
  [7] _jsp._nav._TopNav__jsp._jspService (TopNav.jsp:46)

Steps To Reproduce

Additional Information

Attached Files

Relationships

Notes
(0001916) ferg 05-15-07 13:28	jsp/1c3y, jsp/1c3z

Issue History
Date Modified	Username	Field	Change
05-01-07 09:06	ferg	New Issue
05-15-07 13:28	ferg	Note Added: 0001916
05-15-07 13:28	ferg	Assigned To	=> ferg
05-15-07 13:28	ferg	Status	new => closed
05-15-07 13:28	ferg	Resolution	open => fixed
05-15-07 13:28	ferg	Fixed in Version	=> 3.1.1

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