[Zope] Superfast PageTemplates: Call for expertise

[Peter Bengtsson]

At 14:55 2003-02-18 -0800, sean.upton@uniontrib.com wrote:
>In know this is purely speculation, but what about caching page-templates in
>some intermediate format like ESIS, and writing a lexical scanner for the
>TALES structure in C/Flex with callbacks to Python for code evaluation and
>object traversal?  Obviously, this isn't trivial, but I imagine it would be
>interesting...

Thanks for the tips but the only words I understood in that was TALES and 
Python.
No, I think it sounds like too much work for me, but thanks anyways.

Peter

>Sean
>
>-----Original Message-----
>From: Dieter Maurer [mailto:dieter@handshake.de]
>Sent: Tuesday, February 18, 2003 1:45 PM
>To: Peter Bengtsson
>Cc: zope@zope.org
>Subject: Re: [Zope] Superfast PageTemplates: Call for expertise
>
>
>Peter Bengtsson wrote at 2003-2-17 22:57 +0000:
>  > ...
>  > My product uses PageTemplates (mostly through PageTemplateFile) and the
>  > PageTemplate stuff really goes at the top of the CPU timing.
>  > I.e. the PageTemplate rendering is "slow". DTML is probably not faster
>
>DTML is much faster...
>
>  > and
>  > I'm not "blaming" PageTemplates as such because I understand that they
>have
>  > a lot of work to do.
>
>  > My question is: How do I ease off the load on PageTemplate rendering?
>  >
>  > What in TAL should generally be avoided, if possible, to gain that extra
>  > performance?
>
>The slowest part for a PageTemplate is its parsing...
>
>   Avoid doing it more than once.
>
>  > Are there any particular constructions that are "bad" to do with TAL
>  > syntax/formatting?
>
>I do not think so.
>
>  > (I've heard that METAL is "slow" but they're difficult to avoid because
>of
>  > their great functionality)
>
>I cannot confirm this.
>
>Someone started to code PageTemplates in C. I think, I read something
>about this in the "xml-sig" mailing list.
>
>A little less drastic would be to replace the "HTMLParser"
>and use, e.g. "sgmlop".
>
>
>Dieter
>
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