performance tuning annotation layers

[Xin]

Hi,

I'm currently trying to produce my map under 1 second. A tough goal, yes.
I've managed to speed it up from around 3s to 1.5s so far. I did this using
various techniques, such as tileindexing, splitting up data, thinning data.

Using shp2img I can see drawing label cache takes the most time! Close to a
second. Clearly there's some performance to be squeezed out here. I thought
I'd email for some advice. Here's what most of my labels look like:

LABEL
TYPE TRUETYPE
FONT "arial"
FORCE true
SIZE 9
POSITION CR
MINDISTANCE 300
MAXSIZE 20
COLOR 0 0 0
OUTLINECOLOR 255 255 255
SHADOWCOLOR 255 255 255
SHADOWSIZE 2 2
ANTIALIAS false
PARTIALS FALSE
END

I notice if I'm using a bold font, they take quite some time longer. Any
suggestions?

Cheers,
Xin
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