The onstat -g ioa option prints combined information from -g ioq, -g iov, and -g iob.
IBM Informix Dynamic Server Version 10.00.UC1 -- On-Line -- Up 01:55:13 -- 101376 Kbytes AIO global info: 7 aio classes 4 open files 64 max global files 32768 max files from setrlimit AIO I/O queues: q name/id len maxlen totalops dskread dskwrite dskcopy fifo 0 0 0 0 0 0 0 adt 0 0 0 0 0 0 0 msc 0 0 0 0 0 0 0 aio 0 0 0 0 0 0 0 pio 0 0 0 0 0 0 0 lio 0 0 0 0 0 0 0 gfd 3 0 1 607 0 607 0 AIO I/O vps: class/vp s io/s totalops dskread dskwrite dskcopy wakeups io/wup polltries pollfound kaio_pend fifo 0 i 0.0 0 0 0 0 0 0.0 0 0 0 fifo 1 i 0.0 0 0 0 0 0 0.0 0 0 0 msc 0 i 0.0 0 0 0 0 0 0.0 0 0 0 aio 0 i 0.3 607 0 607 0 607 1.0 0 0 0 AIO global files: gfd pathname totalops dskread dskwrite io/s 3 rootdbs.1 607 0 607 0.3 AIO big buffer usage summary: class reads writes pages ops pgs/op holes hl-ops hls/op pages ops pgs/op fifo 0 0 0.00 0 0 0.00 0 0 0.00 kio 0 0 0.00 0 0 0.00 0 0 0.00 adt 0 0 0.00 0 0 0.00 0 0 0.00 msc 0 0 0.00 0 0 0.00 0 0 0.00 aio 0 0 0.00 0 0 0.00 607 607 1.00 pio 0 0 0.00 0 0 0.00 0 0 0.00 lio 0 0 0.00 0 0 0.00 0 0 0.00
For a description of each output column, see the -g ioq, -g iov, and -g iob options.