[Bug: 21.5-b28] performance on aix, cpu hog

[Stephen J. Turnbull]

Thomas Mittelstaedt writes:
 >   Compiler version:                  gcc (GCC) 4.2.2

This may be asking for trouble; XEmacs has historically had problems
with relatively recent versions of GCC, especially on non-free
platforms.

Have you tried building XEmacs with another compiler (including GCC
4.1 or 3.x)?