I've a mod_perl application we've developed on Linux and that we're porting on AIX (4.3.3 and 5.2.0). The AIX boxes are supposed to be more powerful than their Linux equivalents, however the application is strangely slow on AIX -- the httpd configuration being similar. And that's mod_perl 1.28.
So I'm asking for the common wisdom about performance issues on AIX. Currently the perl I use is built with gcc and default settings. Should I set -Dusemymalloc=y ? Should I use the xlC or vac compilers ? Should I port everything to mod_perl 2 ? (which I haven't succeeded to build on AIX 4 by now BTW -- but I'm working on it.)
