IPC Question

[Hunki]

My ipc values in system file is :

set msgsys:msginfo_msgmni=1000

and if i run sysdef :

2048 message queue identifiers (MSGMNI)
512 message segment size (MSGSSZ)
1400 system message headers (MSGTQL)
2048 message segments (MSGSEG)

Which one is taken up by the system and whats the difference between the two. I am trying to do some research on the ipcs message queues.

Thanks !

[Hunki]

sysdef -i was the solution it gives the values similar to /etc/system.