[jboss-jira] [JBoss JIRA] Commented: (JBWEB-142) Modifiable org.apache.jasper.Constants.DEFAULT_TAG_BUFFER_SIZE

Thu Jun 18 06:04:57 EDT 2009

    [ https://jira.jboss.org/jira/browse/JBWEB-142?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12472690#action_12472690 ] 

Mike Millson commented on JBWEB-142:
------------------------------------

Test Case:
1) Take heap with default configuration. Inspect org.apache.jasper.Constants and verify that DEFAULT_TAG_BUFFER_SIZE is 512. See attached default.png.
2) Add the following JVM option to run.conf:
 -Dorg.apache.jasper.Constants.DEFAULT_TAG_BUFFER_SIZE=1001
3) Take heap with default configuration. Inspect org.apache.jasper.Constants and verify that DEFAULT_TAG_BUFFER_SIZE is 1001. See attached set-to-1001.png.

> Modifiable org.apache.jasper.Constants.DEFAULT_TAG_BUFFER_SIZE
> --------------------------------------------------------------
>
>                 Key: JBWEB-142
>                 URL: https://jira.jboss.org/jira/browse/JBWEB-142
>             Project: JBoss Web
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>          Components: Tomcat
>    Affects Versions: JBossWeb-2.0.0.GA_CP10
>            Reporter: Mike Millson
>            Assignee: Remy Maucherat
>         Attachments: jbweb-142.patch
>
>
> Add functionality to parameterize the buffer size of org.apache.jasper.runtime.BodyContentImpl.java (e.g. with an environment variable).
> Currently the buffer size is determined by the org.apache.jasper.Constants.DEFAULT_TAG_BUFFER_SIZE constant, which is set 512 bytes, and there is no way to override this.
> Applications with many JSP pages that are larger than 512 bytes would benefit from a larger buffer size by avoiding excessive GC due to creating and destroying char arrays.

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