How to check Asynchronous I/O is configured or not on the AIX system?

 

How to check Asynchronous I/O is configured or not on the AIX system?

 

root#test1] iostat -P   ß run the command

 

System configuration: lcpu=4 drives=17 ent=0.20 paths=136 vdisks=1 maxserver=400

 

aio: avgc avfc maxgc maxfc maxreqs avg-cpu: % user % sys % idle % iowait physc % entc

iostat: 0551-157 Asynchronous I/O not configured on the system.

 

 

 

 

root#test2] iostat -P  ß run the command

System configuration: lcpu=8 drives=4 ent=0.10 paths=32 vdisks=1 maxserver=800

 

aio: avgc avfc maxgc maxfc maxreqs avg-cpu: % user % sys % idle % iowait physc % entc

iostat: 0551-157 Asynchronous I/O not configured on the system.