Shared memory segments

[Unix Team]

We are in the process of migrating an app from HP to AIX and the following question came up. We are comparing 32bit AIX5.2 to 32bit HPUX 11i

AIX has a limit of 11 shared memory segments per process, do we know how many does HP have?, just to sense comparison versus the prior environment?

[A. Clay Stephenson · Accepted solution]

That is a tunable (shmseg) under HP-UX and the default (off the top of my head) is 120 but can be increased upto shmmni (the system-wide number of shm segments) and shmmni is also tunable.

[James R. Ferguson]

Hi:

In comparison to AIX, HP-UX has a plethora of kernel tunables. In my opinion, this is a great benefit.

http://docs.hp.com/en/TKP-90202/index.html

If you want to see your current configuration's settings do:

# kmtune -l

Regards!

...JRF...