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From: blewis@hpcuhc.cup.hp.com (Bob Lewis)
Newsgroups: comp.sys.hp
Subject: Re: System-configurable parameters
Message-ID: <530021@hpcuhc.cup.hp.com>
Date: 16 Nov 90 23:13:57 GMT
References: <675@modus.sublink.ORG>
Organization: Hewlett Packard, Cupertino
Lines: 64

First, list the .h files that describe the parameters of interest.

$ cd /usr/include/sys
$ sed -n -e '/info/,/}/p' msg.h sem.h shm.h
**      Message information structure.
*/

struct msginfo {
        int     msgmap, /* # of entries in msg map */
                msgmax, /* max message size */
                msgmnb, /* max # bytes on queue */
                msgmni, /* # of message queue identifiers */
                msgssz, /* msg segment size (should be word size multiple) */
                msgtql; /* # of system message headers */
        ushort  msgseg; /* # of msg segments (MUST BE < 32768) */
};
** semaphore information structure
*/
struct  seminfo {
        int     semmap,         /* # of entries in semaphore map */
                semmni,         /* # of semaphore identifiers */
                semmns,         /* # of semaphores in system */
                semmnu,         /* # of undo structures in system */
                semmsl,         /* max # of semaphores per id */
                semopm,         /* max # of operations per semop call */
                semume,         /* max # of undo entries per process */
                semusz,         /* size in bytes of undo structure */
                semvmx,         /* semaphore maximum value */
                semaem;         /* adjust on exit max value */
};
struct  shminfo {
        int     shmmax, /* max shared memory segment size */
                shmmin, /* min shared memory segment size */
                shmmni, /* # of shared memory identifiers */
                shmseg, /* max attached shared memory segments per process */
                shmbrk, /* gap (in clicks) used between data and shared memory *
                shmall, /* max total shared memory system wide (in clicks) */
                nshm_hash,      /* size of segment address hash table */
                nshm_free_segs; /* number of free segment discriptors */
};


Then, use adb to display those parameters.  Note that one "gotcha" exists.
See the above ushort.  That is displayed using the "/d" to display short.
The other values are just listed nicely in a table and you can pick
out the values you want by referring to the .h file descriptions.

The specific key strokes are:

echo msginfo+18\/d\\nmsginfo,19\/D|adb -k /hp-ux /dev/kmem

The results:
$ adb -k /hp-ux /dev/kmem
sbr 121280 slr 22C2800
msginfo+18:     1024
msginfo:
msginfo:        100             8192            16384           50
                8               40              67108864
seminfo:        10              10              60              30
                500             500             10              96
                32767           16384
shminfo:        67108864        1               100             12
                16              1536            128             200
$q