ANGLE FOLLOW performance issue in Linux (not in MS4W)

[clj2289]

Using ANGLE FOLLOW on an annotation layer increases draw time for a layer by a factor of 3, but only on Linux. This was tested using shp2img command on the following version, 5.4.2, 5.4.1, 5.2.3, 5.0.0 and trunk (9/21/2009). The difference in performance can be see in the following log message comparing ANGLE FOLLOW and ANGLE AUTO. Attached you will find a test set and a profile of ANGLE FOLLOW and ANGLE AUTO.

Angle Follow:

[Mon Sep 21 02:01:50 2009].285986 msDrawMap(): Layer 0 (local road names), 0.129s
[Mon Sep 21 02:01:55 2009].313465 msDrawMap(): Drawing Label Cache, 5.027s
[Mon Sep 21 02:01:55 2009].313504 msDrawMap() total time: 5.158s
[Mon Sep 21 02:01:55 2009].334529 msSaveImage() total time: 0.021s
[Mon Sep 21 02:01:55 2009].334601 msFreeMap(): freeing map at 0x8114e08.

Angle Auto:

[Mon Sep 21 02:02:30 2009].164785 msDrawMap(): Layer 0 (local road names), 0.016s
[Mon Sep 21 02:02:31 2009].757127 msDrawMap(): Drawing Label Cache, 1.592s
[Mon Sep 21 02:02:31 2009].757163 msDrawMap() total time: 1.610s
[Mon Sep 21 02:02:31 2009].780415 msSaveImage() total time: 0.023s
[Mon Sep 21 02:02:31 2009].780487 msFreeMap(): freeing map at 0x86b1e08.

[clj2289]

Could not upload test set to trac b/c of file size limitations. Please download from ​http://c0342891.cdn.cloudfiles.rackspacecloud.com/test.tar.gz