The onstat -g iog option prints AIO global information.
Example Output
Figure 63. onstat -g iog Output
IBM Informix Dynamic Server Version 10.00.UC1 -- On-Line -- Up 01:55:42 -- 101376 Kbytes
AIO global info:
7 aio classes
4 open files
64 max global files
32768 max files from setrlimit