RichFaces rich:insert takes a long time to output large files

I'm using a RichFaces <rich:insert like this:

<rich:panel header="my head">
    <a4j:outputPanel ajaxRendered="true">
        <rich:insert src="#{MyBacking.myPath}" highlight="groovy" />
    </a4j:outputPanel>
</rich:panel>

If I have a 60k file to output, it takes 23 seconds. I've got a requirement to output the contents of some larger files than that and obviously the larger the file, the larger the wait for content. 开发者_开发技巧 The recommendation in the answer to another related question is to introduce paging. I will, but the question is, why does it take so long to output 60k of text using JSF/RichFaces? That is, reading off a local disk with Windows XP SP2 PC - I can see from the log the data has already been written to disk from the network.

Other scripting languages appear to be faster than this - is it something to do with the JSF lifecycle having to handle the text maybe?

Thanks

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If it is a text file (and not binary), and you don't need syntax highlighting, why don't you include it with <a4j:include>?

If you really need syntax highlighting, then you could try to:

• upgrade to the latest version of richfaces
• verify whether the slowness isn't coming from the javascript engine of your browser
• use other syntax highligher, like markdown