Re: [xsl] Slow XSLT

[Cleyton Jordan <cleytonjordan@xxxxxxxxxxx>]

Hi David,

I have noticed that the rendering can take a long time
for a long table. Therefore, I am measuring only the
time to transform not render.

I will also take into account your suggestion to use
fixed length for the width of columns. But for now I
am only worried about improving the performance of the
transformation.

In my previous email, I asked you what you thought
about using keys. Don't you think this could improve
the transformation? The problem is that I cannot
figure out what key to produce. Do you have any ideas?

Cheers

C


--- David Carlisle <davidc@xxxxxxxxx> wrote:

> 
> 
> > it still takes 7 seconds to transform in IE and
> > Firefox.
> 
> is that to do the transform or to render it?
> 
> If you are generating a large table then it can take
> a long time to
> render. Do the transform using saxon or some other
> command line
> processor to generate an html file and see how long
> it takes to render
> that. (It's often possible to speed up table
> rendering by telling teh
> css system that it has a fixed layout with fixed
> width columns, so that
> it can do progressive rendering rather than wait
> until the end to
> calculate widths,
> 
> 
> > I was wondering if using KEYS it would help to
> improve
> > the transformation?
> 
> probably nor, the only thing I noticed that might be
> inefficient is 
> 
>   <xsl:template match="Cell[not(*)]">
>     <xsl:for-each select="/Report/Measures/Measure">
>       <td> </td>
>     </xsl:for-each>
>   </xsl:template>
>  
> 
> which does the same pass over the top of the
> document repeatedly, that
> could be written as
> 
>   <xsl:template match="Cell[not(*)]">
>     <xsl:copy-of select=""blankcell"/>
>   </xsl:template>
>  
>   <xsl:variable name="blankcell">
>     <xsl:for-each select="/Report/Measures/Measure">
>       <td> </td>
>     </xsl:for-each>
>   </xsl:variable>
> 
>  David
> 
>
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