onstat -g iof

Prints asynchronous I/O statistics by chunk or file. This option is similar to the -D options, except that information on nonchunk files is also displayed. It includes information about temporary files and sort-work files.

Example Output

IBM Informix Extended Parallel Server Version 8.50.FN145 -- On-Line -- Up 01:55:32 
-- 101376 Kbytes
AIO global files:
gfd pathname         totalops  dskread dskwrite  io/s
  3 rootdbs.1             613        0      613   0.3

Output Description

gfd

Global file descriptor number for this chunk

pathname

The pathname of the chunk

totalops

Total number of read and write operations that have occurred against the chunk

dskread

Number of disk read that have occurred against the chunk

dskwrite

Number of disk writes that have occurred against the chunk

io/s

Number of I/Os per second