Improving performance with TT2

Hello all,

We at Bugzilla are heavily using Template Toolkit to generate all our
templates dynamically. But when doing some profiling with
Devel::NYTProf, it appears that TT2 is taking most of the time when
processing a CGI script. This means that some pages can take up to ~10
seconds to render, which is very slow.

I wondered if you could give me some advices about performance. We
really made our best to render pages as fast as possible, but I hope
there is room for more tweaks and improvements.

One question comes to mind: I know TT2 pass variables by data instead of
by references, meaning that variables are copied again and again. As our
pages can be several MB in size, I wondered if splitting a single call
to $template->process() into several calls would really help make things
faster?


Thanks for you help,

Frédéric