[ic] performance / flushing pages

Mon May 6 23:50:01 2002

> 
> I have pages that do the following:
> 
>   <html>
>   <body>
> 
>   ... some static content, headers, images and titles ...
> 
>   [perl]
>          a lot of processing
>   [/perl]
> 
>   ... some footer ...
> 
>   </body>
>   </html>
> 
> 
> The [perl] portion may take a long time, say 4 or 5 seconds. When I load a
> page like this, NOTHING appears until all the tags have been evaluated. One
> can think that the server could start sending all the static content above
> the first tag, then continue throwing data as tags evaluate. There would be
> a noticeable performance gain because:
> 
> 1. The perception of the user is that the server responds very quickly (even
> though the page takes 5 seconds to fully load).
> 
> 2. while the tag evaluates the client browser can start rendering the HTML
> page and grabbing the heading images.
> 
> But I just can't get this on interchange. Does anybody know...?
> 
You may find the "Interchange Perl Objects" section of the "Interchange
Templates" manual, and the "[perl]" section of the "Interchange Tags
Reference" useful here.  Specifically, the parts that describe the
$Document object.

Five seconds is a long time to spend in a [perl] block.  Perhaps some
work can be done in there to reduce the processing time.

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