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https://issues.apache.org/jira/browse/WICKET-7042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17710407#comment-17710407
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ASF GitHub Bot commented on WICKET-7042:
----------------------------------------

theigl commented on code in PR #573:
URL: https://github.com/apache/wicket/pull/573#discussion_r1162335300


##########
wicket-core/src/main/java/org/apache/wicket/page/PartialPageUpdate.java:
##########
@@ -265,7 +265,7 @@ private CharSequence renderScripts(Collection<CharSequence> 
scripts) {
                        
combinedScript.append("(function(){").append(script).append("})();");
                }
 
-               StringResponse stringResponse = new StringResponse();
+               StringResponse stringResponse = new 
StringResponse(combinedScript.length() + 65);

Review Comment:
   I wasn't sure how I would name this constant. It's the length of the script 
tag plus CDATA:
   
   ```java
   <script type="text/javascript">
   /*<![CDATA[*/
   .....
   /*<![CDATA[*//*]]>*/
   </script>
   





> Improve sizing of StringResponse when writing scripts in PartialPageResponse
> ----------------------------------------------------------------------------
>
>                 Key: WICKET-7042
>                 URL: https://issues.apache.org/jira/browse/WICKET-7042
>             Project: Wicket
>          Issue Type: Improvement
>          Components: wicket-core
>    Affects Versions: 9.12.0
>            Reporter: Thomas Heigl
>            Assignee: Thomas Heigl
>            Priority: Major
>
> When rendering scripts in PartialPageResponse, an AppendingStringBuilder with 
> initial capacity 1024 is created. This buffer is then written to a 
> StringResponse that uses a buffer with an initial capacity of 128 causing 
> unnecessary allocations.
> We should create the StringResponse with enough capacity to hold the scripts.



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