HP-UX

Shawshank,

Just to clarify, the psp_socket_id field is not going to be enough to give you a count of the physical processors. It will only give you the id of the processor you're currently on. The mpctl() call can be used with the MPC_GETFIRSTSPU_SYS argument to allow you to iterate through the logical processors on the system and, if you keep a list of the existing processor ids, you can then count up the number of running sockets you're working with.

Something like this:

Code:

spu_t spu;
PST_PROCESSOR psp;
int returnval;

spu = mpctl(MPC_GETFIRSTSPU_SYS, 0, 0);
while (spu != (spu_t)-1)
{
     returnval = pstat_getprocessor(pst, sizeof(PST_PROCESSOR), 1, spu);
     if (returnval != -1)
        /* Check to see if this socket id exists in your list */
        /* If it doesn't exist, add it */

     spu = mpctl(MPC_GETNEXTSPU_SYS, spu, 0);
}

That should give you your list of physical processors that you can then add up. You can use a variation of this with the MPC_GETFIRSTCORE_SYS and MPC_GETNEXTCORE_SYS arguments to count the cores as well (please note that this may be preferred to using ioscan to get the data, as HP-UX does allow the allocation of processor sets. Ioscan may not recognize this, and you'll end up only getting stats for the processor set you're running on).

Also, on versions earlier than 11i v2, I've generally used the pstat_getdynamic() call to get back pst_dynamic.psd_proc_cnt to get reasonably close.