tuxedo调用动态库报错：Cannot allocate memory

[sTigerwsk]

如题：

编译完成动态库后，启动tuxedo报错。

exec tux_aaa-A -e /cbs/log/err.log -o /cbs/log/out.log -- -S aaa:
tux_aaa: error while loading shared libraries: libtr_aaa.so: failed to map segment from shared object: Cannot allocate memory
CMDTUX_CAT:819: INFO: Process id=13810 Assume started (pipe).

编译动态库命令为：

gcc -o libtr_aaa.so -shared -fPIC $HOME/obj/*.o

操作系统为：REHL 5.4

系统内存大小为2G

ulimit属性为 ulimit -m unlimited

网上查询出的方法都试过了，问题依然，直接执行tux_aaa也会报错：
tux_aaa: error while loading shared libraries: libtr_aaa.so: failed to map segment from shared object: Cannot allocate memory
还请各位大侠解释为什么。