At 22:45 2003-02-18 +0100, Dieter Maurer wrote:
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...
Hmm. "much". Anybody has any numbers on this? (in my case it'd be too late now to change however)
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...
Parsing of what? I'm not an engineer but as I've understood it there are several different kinds of parsing to go from TAL to HTML.
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".
That sounds interesting but I'm not up for it myself. Peter
Dieter